chore: Add PR title check on sync (#698)

## Summary

* Add PR title check on sync

## Additional Context

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? No

.github/workflows/pr-formatting-check.yml

@@ -1,6 +1,7 @@
 name: "PR Formatting"
 
 on:
+  pull_request:
   pull_request_target:
     types:
       - opened