Add stack trace logging to error handling in req.ts

Co-authored-by: Anmol1696 <10805402+Anmol1696@users.noreply.github.com>

Author: Copilot

jobs/knative-job-worker/src/req.ts

@@ -66,6 +66,9 @@ const request = (
       function (error: unknown) {
         if (error) {
           log.error(`request error for job[${jobId}] fn[${fn}]`, error);
+          if (error instanceof Error && error.stack) {
+            log.debug(error.stack);
+          }
           return reject(error);
         }
         log.debug(`request success for job[${jobId}] fn[${fn}]`);