**Backport:** https://codeberg.org/forgejo/forgejo/pulls/12446
- Regression of forgejo/forgejo!11776 (and forgejo/forgejo!11881)
- Scope of the transaction is moved to a per-package cleanup rule basis.
This is also a enhancement for scaling (already deployed on Codeberg for a while).
- Package cleanup is now run with `RetryTx`, because rebuilding
repository files runs `RetryTx` and it could indicate to retry the whole
transaction.
- Previously it would error and say running `RetryTx` in a
transaction was not possible, this is now possible. Nested `RetryTx` is
always allowed, matching of which errors to retry is still the responsible
of the inner `RetryTx`.
Co-authored-by: Gusted <postmaster@gusted.xyz>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12452
Reviewed-by: Gusted <gusted@noreply.codeberg.org>