Add merge_queue trigger to test-and-release workflow

This enables the CI workflow to run when PRs are added to GitHub's
merge queue, ensuring checks pass before automatic merging.

https://claude.ai/code/session_01Fm16f35tWeM3agGyE91wft

Author: claude

.github/workflows/test-and-release.yml

@@ -1,12 +1,13 @@
 name: Test and Release
 
-# Run this job on all pushes to main and for pull requests
+# Run this job on all pushes to main, for pull requests, and merge queue
 on:
   push:
     branches:
       # This avoids having duplicate builds in non-forked PRs
       - "main"
   pull_request: {}
+  merge_queue: {}
 
 # Cancel previous PR/branch runs when a new commit is pushed
 concurrency: