ci(repo): trigger conventional PR title check for v9 PRs

[xsahil03x]

Summary

pull_request_target workflows are read from the default branch (master), not from the PR's base branch — this is a documented GitHub security behavior. The branches: filter on master's pr_title.yml was just [master], so PRs targeting v9 silently skipped both the conventional-PR-title and changelog-update gates.

#2756 added v9 to the same filter on the v9 branch, but that copy is never consulted for pull_request_target events; only master's version matters.

Confirmed via the runs API: comparing recent v9 backport PRs (#2760, #2763) shows check_db_entities (no branches: filter) ran, while PR is Conventional and Semantic did not.

Test plan

• YAML still parses.
• After merge, opening or editing the title of a v9 PR should trigger the PR is Conventional and Semantic check.

🤖 Generated with Claude Code

Summary by CodeRabbit

Release Notes

No user-facing changes in this release. Internal workflow configuration was updated.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: ca6abded-c7c6-4073-b8f0-f640997cb592

📥 Commits

Reviewing files that changed from the base of the PR and between eb9dc89 and 544aa2a.

📒 Files selected for processing (1)

• .github/workflows/pr_title.yml

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📝 Walkthrough

Walkthrough

A single entry v9 is added to the types list of the pull_request_target trigger in .github/workflows/pr_title.yml. No other workflow logic, jobs, steps, or concurrency settings are modified.

Changes

PR Title Workflow Trigger

Layer / File(s)	Summary
Add v9 to pull_request_target types .github/workflows/pr_title.yml	v9 is appended to the existing types list (opened, edited) for the pull_request_target event trigger.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A rabbit hops in, makes a tiny addition,
v9 joins the list with quiet precision.
The workflow now listens for one more event,
A single line added, a small amendment.
🐇✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding v9 to the PR title check trigger in the CI configuration.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/ci-pr-title-v9-trigger

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