[CI] Split the CI control labels into four axes and resolve them live (#40527)

.github/actions/wait-for-jobs/action.yml

@@ -1,5 +1,5 @@
 name: Wait for Jobs
-description: Poll and wait for specified jobs in the current workflow run to complete. Returns success immediately when the PR carries the `bypass-fastfail` label, letting downstream stages dispatch in parallel (same effect as scheduled runs).
+description: Poll and wait for specified jobs in the current workflow run to complete. Returns success immediately when the PR carries the `parallel-stages` label (or `highest-priority`, which implies it), letting downstream stages dispatch in parallel (same effect as scheduled runs).
 
 inputs:
   stage-name:
@@ -49,28 +49,12 @@ runs:
           const pollIntervalSeconds = parseInt(process.env.INPUT_POLL_INTERVAL_SECONDS);
           const maxAttempts = (maxWaitMinutes * 60) / pollIntervalSeconds;
 
-          // bypass-fastfail label opts the PR out of stage-to-stage waiting,
-          // letting all stages dispatch in parallel like scheduled runs do.
-          let labels = [];
-          if (context.payload.pull_request?.labels) {
-            labels = context.payload.pull_request.labels.map(l => l.name);
-          } else {
-            const ref = context.payload.pull_request?.head?.sha || context.sha;
-            try {
-              const { data: prs } = await github.rest.repos.listPullRequestsAssociatedWithCommit({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                commit_sha: ref,
-              });
-              if (prs.length > 0) {
-                labels = prs[0].labels.map(l => l.name);
-              }
-            } catch (e) {
-              console.log(`Could not fetch PR labels for ${ref}: ${e.message}`);
-            }
-          }
-          if (labels.includes('bypass-fastfail')) {
-            console.log(`Skipping ${stageName} wait (bypass-fastfail label present)`);
+          const { resolveCiLabels } = require(
+            `${process.env.GITHUB_WORKSPACE}/.github/scripts/ci-labels.cjs`
+          );
+          const { parallelStages } = await resolveCiLabels(github, context);
+          if (parallelStages) {
+            console.log(`Skipping ${stageName} wait (parallel-stages label present)`);
             core.setOutput('result', 'success');
             return;
           }