bcachefs: Don't schedule non persistent passes persistently

  if (!(in_recovery && (flags & RUN_RECOVERY_PASS_nopersistent)))

should have been

  if (!in_recovery && !(flags & RUN_RECOVERY_PASS_nopersistent)))

But the !in_recovery part was also wrong: the assumption is that if
we're in recovery we'll just rewind and run the recovery pass
immediately, but we're not able to do so if we've already gone RW and
the pass must be run before we go RW. In that case, we need to schedule
it in the superblock so it can be run on the next mount attempt.

Scheduling it persistently is fine, because it'll be cleared in the
superblock immediately when the pass completes successfully.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>