test: fix wait_for_instantlock calls in test_instantsend_after_restart

[thepastaclaw]

Summary

Fix two broken wait_for_instantlock call sites in test_instantsend_after_restart that were missed during the merge of #7240 and #7241.

Problem

The merge of #7240 (added test_instantsend_after_restart with old-style calls) and #7241 (refactored wait_for_instantlock(txid, node) → wait_for_instantlock(*txids, nodes=None)) left two call sites using the old positional signature:

for node in self.nodes:
    self.wait_for_instantlock(txid, node)  # node consumed as second *txid

The node object gets silently swallowed into *txids as a second "txid", causing getrawtransaction(node_object, True) to fail and the wait to time out after ~282 seconds. This breaks p2p_instantsend.py on every CI run.

Fix

Replace both loops with the new consolidated API which handles mempool sync and checks all nodes by default:

self.wait_for_instantlock(txid)

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Run ID: 7fd8230e-12f3-42d0-bbd9-fa9c2f391c1a

📥 Commits

Reviewing files that changed from the base of the PR and between 3957e09 and c885b55.

📒 Files selected for processing (1)

• test/functional/p2p_instantsend.py

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Walkthrough

The change modifies the test_instantsend_after_restart test in the InstantSend test suite. Previously, the test explicitly advanced mock time by 30 blocks, synchronized mempools across nodes, and then iterated over each node to wait for InstantSend locks with explicit node arguments. The updated approach removes these explicit time advancement and synchronization steps, instead directly calling wait_for_instantlock() without node iteration, relying on default behavior for lock resolution.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarizes the main change: fixing wait_for_instantlock calls in a specific test function.
Description check	✅ Passed	The description is directly related to the changeset, providing clear context about the problem (mismatched API signatures from merged PRs) and the fix applied.

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[github-actions]

✅ No Merge Conflicts Detected

This PR currently has no conflicts with other open PRs.

[PastaPastaPasta]

ACK c885b55

[knst]

post-ACK c885b55