Repo Gardening: handle External Media extension

[jeherve]

Proposed changes:

This should allow automatically labeling PRs like #40382

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

No

Does this pull request change what data or activity we track or use?

No

Testing instructions:

This can be tested in a fork, by merging this branch to trunk and then opening a PR making changes to a file like projects/plugins/jetpack/extensions/shared/external-media/media-button/media-ai-button.js.

[github-actions]

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

• ✅ Include a description of your PR changes.
  
• ✅ Add a "[Status]" label (In Progress, Needs Team Review, ...).
  
• ✅ Add testing instructions.
  
• ✅ Specify whether this PR includes any changes to data or privacy.
  
• ✅ Add changelog entries to affected projects
  

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

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Follow this PR Review Process:

1. Ensure all required checks appearing at the bottom of this PR are passing.
2. Choose a review path based on your changes:
   • A. Team Review: add the "[Status] Needs Team Review" label
     • For most changes, including minor cross-team impacts.
     • Example: Updating a team-specific component or a small change to a shared library.
   • B. Crew Review: add the "[Status] Needs Review" label
     • For significant changes to core functionality.
     • Example: Major updates to a shared library or complex features.
   • C. Both: Start with Team, then request Crew
     • For complex changes or when you need extra confidence.
     • Example: Refactor affecting multiple systems.
3. Get at least one approval before merging.

Still unsure? Reach out in #jetpack-developers for guidance!

[tbradsha]

Not a blocker (and I see it's done like this elsewhere), but I prefer simplifying the construct:

Suggested change

	if ( externalMedia !== null ) {
	if ( externalMedia ) {

[jeherve]

I'll see about updating them all at once in a future PR!

[tbradsha]

Approving, as this works as described.

More generally I do wonder if we have a label bloat problem; do we really need such specific labels?

[jeherve]

More generally I do wonder if we have a label bloat problem; do we really need such specific labels?

That's a good question. They do prove useful for stats, reporting, and for the automations (like pinging in Slack or adding to project boards) so they are useful, but I do think that for some of our products, they're not useful (i.e. the "[Feature] Photon" and "[Package] Image CDN" could probably be merged into one if we updated our logic).

I'll see about starting a discussion about this. 👍