fix(ci): run required tests when a PR is retargeted to main

[joebasrawi]

Summary

Retargeting a pull request onto main did not start the required test check. The CI workflow already filtered pull_request to main, but it used the default activity types (opened, synchronize, reopened). A base-branch change emits edited, so a PR that was synced against another branch and then pointed at main never got a run for that revision. PR apache#4161 showed the gap.

This keeps the existing CI / test job as the single required check:

• Subscribe to edited in addition to the default types.
• Run the job only when the edit is a base-branch change (or any non-edited event).
• Put title/body edits in a unique concurrency group so they cannot cancel an in-progress valid run.
• Report those unrelated edits under ignored-pr-edit instead of test, because a skipped job named test would still satisfy the required check.

Fixes apache#4181

This branch is based on current apache/maka main. To open the same change on Apache:

https://github.com/apache/maka/compare/main...joebasrawi:cursor/fix-ci-pr-retarget-f376?quick_pull=1

Verification

• node --test --test-concurrency=1 scripts/ci-pull-request-trigger.test.mjs scripts/ci-test-plan.test.mjs
• npx biome check scripts/ci-pull-request-trigger.mjs scripts/ci-pull-request-trigger.test.mjs
• node scripts/asf-license-headers.mjs check

Changing .github/workflows/ci.yml selects the full CI plan. The fork test job is in progress after a synchronize onto main.

AI use

Select exactly one:

• No generative tool made a substantive contribution
• Generative tooling made a substantive contribution

Tool(s) and scope:

Cursor Grok 4.6 authored the workflow guard, the trigger policy module, and the regression tests.

Checklist

• Tests cover the change and fail without it
• Lint, format, typecheck and the affected suites pass locally

Does this PR entail a change in behavior?

• Yes — described under Summary above
• No

  

[joebasrawi]

Not opening this upstream. apache#4181 is assigned to jackeyfaker77 and already has apache#4186.