RequestQueue doesn't mark failed requests as handled #510
Description
If a request processing fails, it stays in the pending state. Even after all retry attempts are exhausted and the run completes, the queue will still report, for example, "0 processed / 1 pending," even though no further attempts will be made.
Actor run example: https://console.apify.com/admin/users/mPSyG35Lffj5ybtgz/actors/QkTzVHZakAYHCWePo/runs/huppUetBLOFaFSNHQ#log
Originally reported by @metalwarrior665 on Slack - https://apify.slack.com/archives/CD0SF6KD4/p1753007915099809