[RAR5] Correct handling of unknown filter types

[RAR5] Correct handling of unknown filter types

The change to return FAILED for entry-specific issues uncovered
flaws in RAR5 handling of filter types:
* Supported filter types are verified in `parse_filter` and
  were being also checked in `run_filter` -- the duplication
  confused the error handling here.
* `do_uncompress_file` was only checking for `FATAL` from
  the upstream filter logic, so failed to properly pass
  `FAILED` errors through