[ci] Renames the override post-release label for batch release (#11835)

The repo check ci will be run when creating release pr against release branch. In that case, we want to ignore the check to guard changes to changelog.md and pubspec.

The solution will be reusing the `override: post-release-*` label. I decide to also rename the label to `override: skip-batch-release-repo-check-*` since the original name is not appropriate in this use case.

## Pre-Review Checklist

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Author: chunhtai

.github/workflows/batch_release_pr.yml

@@ -68,6 +68,7 @@ jobs:
             --base "${{ needs.create_batch_release_branch.outputs.release_branch }}" \
             --head "${{ env.HEAD_BRANCH_NAME }}" \
             --title "[${{ github.event.client_payload.package }}] Batch release" \
-            --body "This PR was created automatically to batch release the \`${{ github.event.client_payload.package }}\`."
+            --body "This PR was created automatically to batch release the \`${{ github.event.client_payload.package }}\`." \
+            --label "override: skip-batch-release-repo-check-${{ github.event.client_payload.package }}"
 
 

.github/workflows/sync_release_pr.yml

@@ -35,14 +35,15 @@ jobs:
             exit 0
           fi
 
-          # 3. Extract release name without version for label
+          # 3. Extract package name for label
           BRANCH_NAME="${{ github.ref_name }}"
-          RELEASE_NAME="${BRANCH_NAME%-*}"
+          TEMP="${BRANCH_NAME#release-}"
+          PACKAGE_NAME="${TEMP%-*}"
 
           # 4. Create the PR directly
           gh pr create \
             --base "main" \
             --head "${{ github.ref_name }}" \
             --title "Sync ${{ github.ref_name }} to main" \
             --body "This automated PR syncs the changes from the release branch ${{ github.ref_name }} back to the main branch." \
-            --label "override: post-${RELEASE_NAME}"
+            --label "override: skip-batch-release-repo-check-${PACKAGE_NAME}"

script/tool/lib/src/validators/version_and_changelog_validator.dart

@@ -164,12 +164,15 @@ class VersionAndChangelogValidator {
       pubspec: pubspec,
       ignorePlatformInterfaceBreaks: ignorePlatformInterfaceBreaks,
     );
-    // PR with post release label is going to sync changelog.md and pubspec.yaml
-    // change back to main branch. Proceed with regular version check.
-    final bool hasPostReleaseLabel = _prLabels.contains('override: post-release-${pubspec.name}');
+    // PR with override: skip-batch-release-repo-check-<package> label is going to sync
+    // changelog.md and pubspec.yaml changes back to main branch.
+    // Proceed with regular version check.
+    final bool shouldSkipBatchReleaseRepoCheck = _prLabels.contains(
+      'override: skip-batch-release-repo-check-${pubspec.name}',
+    );
     bool versionChanged;
 
-    if (usesBatchRelease && !hasPostReleaseLabel) {
+    if (usesBatchRelease && !shouldSkipBatchReleaseRepoCheck) {
       versionChanged = await _validatePendingChangeForBatchReleasePackage(
         package: package,
         changedFiles: _changedFiles,

script/tool/test/validate_command_version_test.dart

@@ -1584,7 +1584,7 @@ release:
         );
       });
       test(
-        'ignores changelog and pubspec yaml version modifications check with override: post-release label',
+        'ignores changelog and pubspec yaml version modifications check with override: skip-batch-release-repo-check label',
         () async {
           final RepositoryPackage package = createFakePackage(
             'package',
@@ -1615,7 +1615,7 @@ packages/package/pubspec.yaml
           final List<String> output = await runCapturingPrint(runner, <String>[
             'validate',
             '--base-sha=main',
-            '--pr-labels=override: post-release-package',
+            '--pr-labels=override: skip-batch-release-repo-check-package',
           ]);
 
           expect(