Draft: repository: Remove `testhelper.SkipWithReftable()`
With the fixes around making reftable work with default branch, remove all the testhelper.SkipWithReftable()
in the repository package.
Part of #5839 (closed)
With the fixes around making reftable work with default branch, remove all the testhelper.SkipWithReftable()
in the repository package.
Part of #5839 (closed)