feat: CR-29912 manual cherry pick app set pr generator return 0 results if the repo does not exist#409

reggie-k merged 3 commits intosync-3.0.2codefresh-io/argo-cd:sync-3.0.2from

CR-29912-cherry-pick-AppSet-PR-generator-return-0-results-if-the-repo-does-not-existcodefresh-io/argo-cd:CR-29912-cherry-pick-AppSet-PR-generator-return-0-results-if-the-repo-does-not-existCopy head branch name to clipboard