clfilter: `bookmark.validdest` should run on unfiltered repo
The logic recently added to `bookmark.validdest` uses data about obsolete
changesets to see if a bookmark destination is valid. Obsolete changesets
are likely to be filtered, so we need to work on an unfiltered repository.
basic:
creating
creating
creating
creating
fakeuncacheable:
creating
creating
creating
creating
creating
creating