ci(api-types): require production verification FE-4455 (#50781)

## Problem

API type changes still use the api-deploy-required label and an
informational comment even though production verification has proven
reliable enough to block merges.

## Fix

Remove the obsolete API label path, scope the remaining labeler workflow
to docs changes, and update the API-types guidance. Master branch
protection now requires the app-bound verify-production-api-types check.

## How to test

- Confirm the labeler workflow only runs for changes under apps/docs.
- Confirm API type changes no longer receive the api-deploy-required
label or comment.
- Confirm master branch protection lists verify-production-api-types as
a required GitHub Actions check.
- Expected result: production API type verification blocks mismatched
generated types while unrelated pull requests receive a successful
skipped verification job.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* API type verification is now a required merge check; guidance to run
it before review and treat failures as production drift remains.
* Removed the API deployment label rule and the automated comment
triggered when that label was applied.
* The pull request labeling workflow now runs only for changes affecting
the documentation app.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.github/labeler.yml

@@ -8,8 +8,3 @@ documentation:
 self-hosted:
   - changed-files:
       - any-glob-to-any-file: 'apps/docs/content/guides/self-hosting/**/*'
-
-# Add 'api-deploy-required' to any change in packages/api-types/types
-api-deploy-required:
-  - changed-files:
-      - any-glob-to-any-file: 'packages/api-types/types/**'

.github/workflows/label_prs.yml

@@ -2,6 +2,8 @@ name: 'Pull Request Labeler'
 
 on:
   pull_request_target:
+    paths:
+      - 'apps/docs/**/*'
 
 jobs:
   labeler:
@@ -10,17 +12,4 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
-      - id: label
-        uses: actions/labeler@b8dd2d9be0f68b860e7dae5dae7d772984eacd6d # v6.2.0
-
-      - name: Comment when api-deploy-required is auto-applied
-        if: contains(steps.label.outputs.new-labels, 'api-deploy-required')
-        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
-        with:
-          script: |
-            await github.rest.issues.createComment({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: 'The `api-deploy-required` label was auto-applied to this PR because it updates the API types. The `Verify production API types` check reports whether the committed types match production; it is currently observational and does not block merging.',
-            })
+      - uses: actions/labeler@b8dd2d9be0f68b860e7dae5dae7d772984eacd6d # v6.2.0