CommitsBetween: make sure we walk computed revs with unfiltered repo
As revs are computed using unfiltered repo, so later while converting them to GitCommit objects it should use unfiltered repo.
All legacy (hg-git based) Projects have been automatically migrated to native with the upgrade of 2025-01-23
As revs are computed using unfiltered repo, so later while converting them to GitCommit objects it should use unfiltered repo.