Fix unhandled exceptions in BrowserTabRouteDecisionHandler and SystemNavigationRouteDecisionHandler

[noah44846]

Hi! We ran into two crashes in our production app that both stem from unhandled exceptions in route decision handlers. Sharing the stack traces below in case they're useful — happy to adjust anything if the fix looks different to you.

BrowserTabRouteDecisionHandler throws ActivityNotFoundException when CustomTabsIntent.launchUrl finds no browser with Custom Tabs support installed. This can happen on locked-down or minimal devices.

SystemNavigationRouteDecisionHandler already catches ActivityNotFoundException, but not SecurityException, which is thrown when the target activity exists but is not accessible — e.g. android:exported="false" or a permission requirement the calling app doesn't satisfy. This can happen with deep links targeting third-party apps with restricted activities.

Both cases now log the error and return CANCEL instead of crashing.

---

Stack trace 1 — ActivityNotFoundException in BrowserTabRouteDecisionHandler:

Exception org.chromium.base.JniAndroid$UncaughtExceptionException:
  at org.chromium.base.JniAndroid.handleException (chromium-SystemWebViewGoogle6432.aab-stable-763207903:21)
  at android.os.MessageQueue.nativePollOnce
  at android.os.MessageQueue.next (MessageQueue.java:346)
  at android.os.Looper.loopOnce (Looper.java:214)
  at android.os.Looper.loop (Looper.java:342)
  at android.app.ActivityThread.main (ActivityThread.java:9634)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:619)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:929)
Caused by android.content.ActivityNotFoundException:
  at android.app.Instrumentation.checkStartActivityResult (Instrumentation.java:2443)
  at android.app.Instrumentation.execStartActivity (Instrumentation.java:2005)
  at android.app.Activity.startActivityForResult (Activity.java:6043)
  at androidx.activity.ComponentActivity.startActivityForResult (ComponentActivity.kt:694)
  at android.app.Activity.startActivity (Activity.java:6494)
  at androidx.core.content.ContextCompat.startActivity (ContextCompat.java)
  at androidx.browser.customtabs.CustomTabsIntent.launchUrl (CustomTabsIntent.java:662)
  at dev.hotwire.navigation.routing.BrowserTabRouteDecisionHandler.handle (BrowserTabRouteDecisionHandler.kt:48)
  at dev.hotwire.navigation.routing.Router.decideRoute$navigation_fragments_release (Router.kt:70)
  at dev.hotwire.navigation.navigator.Navigator.getRouteDecision (Navigator.kt:429)
  at dev.hotwire.navigation.navigator.Navigator.route (Navigator.kt:141)
  at dev.hotwire.navigation.navigator.Navigator.route$default (Navigator.kt:134)
  at dev.hotwire.navigation.fragments.HotwireWebFragmentDelegate.visitProposedToLocation (HotwireWebFragmentDelegate.kt:257)
  at dev.hotwire.core.turbo.session.Session.visitProposedToLocation$lambda$0 (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:1)
  at dev.hotwire.core.turbo.session.Session.callback$lambda$0 (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:3)
  at dev.hotwire.core.turbo.util.CoreExtensionsKt.runOnUiThread (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:2)
  at dev.hotwire.core.turbo.session.Session.callback (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:1)
  at dev.hotwire.core.turbo.session.Session.visitProposedToLocation (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:4)
  at dev.hotwire.core.turbo.webview.HotwireWebChromeClient.onCreateWindow (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:8)
  at WV.um.addNewContents (chromium-SystemWebViewGoogle6432.aab-stable-763207903:39)

Stack trace 2 — SecurityException in SystemNavigationRouteDecisionHandler:

Exception java.lang.SecurityException:
  at android.os.Parcel.createExceptionOrNull (Parcel.java:2386)
  at android.os.Parcel.createException (Parcel.java:2370)
  at android.os.Parcel.readException (Parcel.java:2353)
  at android.os.Parcel.readException (Parcel.java:2295)
  at android.app.IActivityTaskManager$Stub$Proxy.startActivity (IActivityTaskManager.java:4276)
  at android.app.Instrumentation.execStartActivity (Instrumentation.java:1723)
  at android.app.Activity.startActivityForResult (Activity.java:5377)
  at androidx.activity.ComponentActivity.startActivityForResult (ComponentActivity.kt:694)
  at android.app.Activity.startActivityForResult (Activity.java:5335)
  at androidx.activity.ComponentActivity.startActivityForResult (ComponentActivity.kt:679)
  at android.app.Activity.startActivity (Activity.java:5721)
  at android.app.Activity.startActivity (Activity.java:5674)
  at dev.hotwire.navigation.routing.SystemNavigationRouteDecisionHandler.handle (SystemNavigationRouteDecisionHandler.kt:31)
  at dev.hotwire.navigation.routing.Router.decideRoute$navigation_fragments_release (Router.kt:70)
  at dev.hotwire.navigation.navigator.Navigator.getRouteDecision (Navigator.kt:429)
  at dev.hotwire.navigation.navigator.Navigator.route (Navigator.kt:141)
  at dev.hotwire.navigation.navigator.Navigator.route$default (Navigator.kt:134)
  at dev.hotwire.navigation.fragments.HotwireWebFragmentDelegate.visitProposedToLocation (HotwireWebFragmentDelegate.kt:257)
  at dev.hotwire.core.turbo.session.Session.visitProposedToLocation$lambda$0 (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:1)
  at dev.hotwire.core.turbo.session.Session.callback$lambda$0 (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:3)
  at dev.hotwire.core.turbo.util.CoreExtensionsKt.runOnUiThread (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:2)
  at dev.hotwire.core.turbo.session.Session.callback (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:1)
  at dev.hotwire.core.turbo.session.Session.visitProposedToLocation (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:4)
  at dev.hotwire.core.turbo.session.Session$TurboWebViewClient.shouldOverrideUrlLoading (r8-map-id-8953dcc4730f437e1589552f5d1f4c8962afcd4e2cae4fdbe400ef7f2e0b5d64:21)
  at java.lang.reflect.Method.invoke
  at WV.kr.invoke (chromium-SystemWebViewGoogle6432.aab-stable-763208003:15)
  at java.lang.reflect.Proxy.invoke (Proxy.java:1006)
  at $Proxy6.shouldOverrideUrlLoading (Unknown Source)
  at org.chromium.android_webview.AwContentsClientBridge.shouldOverrideUrlLoading (chromium-SystemWebViewGoogle6432.aab-stable-763208003:102)
  at android.os.MessageQueue.nativePollOnce
  at android.os.MessageQueue.next (MessageQueue.java:335)
  at android.os.Looper.loop (Looper.java:206)
  at android.app.ActivityThread.main (ActivityThread.java:8653)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:602)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1130)
Caused by android.os.RemoteException: Remote stack trace:
  at com.android.server.wm.ActivityStackSupervisor.checkStartAnyActivityPermission (ActivityStackSupervisor.java:1344)
  at com.android.server.wm.ActivityStarter.executeRequest (ActivityStarter.java:1263)
  at com.android.server.wm.ActivityStarter.execute (ActivityStarter.java:897)
  at com.android.server.wm.ActivityTaskManagerService.startActivityAsUser (ActivityTaskManagerService.java:1721)
  at com.android.server.wm.ActivityTaskManagerService.startActivityAsUser (ActivityTaskManagerService.java:1571)