chore: remove test compat/stop-propagation (#1848)

Regression of #1835
See
#1835 (comment)
for more detail
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Tests**
* Removed the stop-propagation compatibility diagnostic test and its
expected warning outputs for webpack and rspack.
* Deleted the related sample component and build configuration files
used solely by this test.

* **Chores**
  * Added a placeholder changeset entry.

No user-facing features, behavior, or API changes.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

## Checklist

<!--- Check and mark with an "x" -->

- [ ] Tests updated (or not required).
- [ ] Documentation updated (or not required).
- [ ] Changeset added, and when a BREAKING CHANGE occurs, it needs to be
clearly marked (or not required).

Author: gaoachao

.changeset/quick-clubs-bow.md

@@ -0,0 +1,3 @@
+---
+
+---