Wait to get timeline after commenting on Padawan PRs #7231
Description
From @Tyriar: It's also delayed on .com since it takes time to determine and launch the session. Since we expect it after commenting on a Copilot assigned PR, could we do some retries with exponential backoff or something to not put too much load on the server? Something like 500, 1000, 2000, 5000 give up?