fix(ci): add detect to all-checks-pass needs so its failure blocks merge

If detect fails, all downstream sub-workflows get SKIPPED (they have
needs: detect). all-checks-pass used if: always() and only checked the
sub-workflows — which all showed as 'skipped' (= success) — so it passed
even though the root cause (detect) failed. This made the PR mergeable
despite a broken CI pipeline.

Add detect to all-checks-pass needs so its failure propagates to the
gate job and blocks the merge.

.github/workflows/ci.yml

@@ -259,6 +259,7 @@ jobs:
   all-checks-pass:
     name: All required checks pass
     needs:
+      - detect
       - tests
       - lint
       - js-tests