Replace brittle inline script with Node.js script (#3619)

.github/scripts/check-job-skipped.ts

@@ -0,0 +1,29 @@
+import * as core from "@actions/core";
+import { Octokit } from "@octokit/rest";
+
+async function run() {
+  const octokit = new Octokit({ auth: process.env.GITHUB_TOKEN });
+
+  const run_id = process.env.TEST_RUN_ID;
+  if (!run_id) throw new Error("TEST_RUN_ID not set");
+
+  const { data } = await octokit.rest.actions.listJobsForWorkflowRun({
+    owner: 'maplibre',
+    repo: 'maplibre-native',
+    run_id: parseInt(run_id)
+  });
+
+  const jobName = process.env.JOB_NAME;
+  if (!jobName) throw new Error("JOB_NAME not set");
+
+  const job = data.jobs.find(({name}) => name === jobName);
+  if (!job) throw new Error(`job with name ${jobName} not found in workflow run with id ${run_id}`);
+
+  core.setOutput('was_skipped', job.conclusion === 'skipped');
+}
+
+try {
+  await run();
+} catch (err) {
+  core.setFailed(err instanceof Error ? err.message: `${err}`);
+}