Release syncing is being retried for all branches when it is not possible to download archive

[lbarcziova]

Related code:

packit-service/packit_service/worker/handlers/distgit.py

Lines 443 to 457 in 3531669

	for model in sync_release_run_model.sync_release_targets:
	model.set_status(status=SyncReleaseTargetStatus.retry)
	self.sync_release_helper.report_status_to_all(
	description=f"{self.job_name_for_reporting.capitalize()} is "
	f"being retried because "
	"we were not able yet to download the archive. ",
	state=BaseCommitStatus.pending,
	url="",
	)
	return TaskResults(
	success=True, # do not create a Sentry issue
	details={"msg": "Not able to download archive. Task will be retried."},
	)

If it is not possible to download the archive at least for one of the branches, all the branches are being retried no matter whether they ran successfully (probably coming from the assumption that the source being download is the same for all branches). That results in confusing behaviour for branches where the syncing already went successfully - multiple rebases in the created PR.

Reported by @ljavorsk for https://src.fedoraproject.org/rpms/man-pages-l10n/pull-request/23#. In this case the Source is different for the branches (in one incorrectly formatted).