Fix valid checking for keycodes

[AkariiinMKII]

This PR fixed valid checking for keycodes in some situations

1. When using a hex value in custom key any, only accept hex formed string in range of 0x0000 and 0xffff, including leading zero value and non leading zero value

   • Before changes
     
   • After changes
     

2. Dim the unsupported keys in select area and block click actions, it is a previously built function and disabled due to the bug
   

3. When selecting an unsupported keycode (if possible), block the applying action.
   Before the changes, it will apply with keycode 0 (aka. KC_NO)

4. When applying a saved layout which includes unsupported keycodes, replace them with KC_NO, port error message to console and list them on web page
   
   
   There is no message output before changes.

5. Fix keycode checking for mod combo keys in Any
   

   app/src/utils/advanced-keys.ts

   Line 397 in 892ee1b

   if (bytes.find((e) => e === null)) {

   
   The find method returns null for invalid keycodes and if (null) equals to if (false) in this case
   • Before changes
   
   • After changes