fix: fix ci dashboard e2e test (#7338)
- Add the necessary branch row for the workflow repository. This is required for the dashboard search to return any commit status for the default branch.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7338
Reviewed-by: Otto <otto@codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>