filter_skymodel.py crashing on final iteration with small /var or /tmp folders

The filter_skymodel.py overrides any user-set TMPDIR: https://git.astron.nl/RD/rapthor/-/blob/master/rapthor/scripts/filter_skymodel.py#L100

    # Try to set the TMPDIR evn var to a short path, to ensure we do not hit the length
    # limits for socket paths (used by the mulitprocessing module). We try a number of
    # standard paths (the same ones used in the tempfile Python library)
    try:
        old_tmpdir = os.environ["TMPDIR"]
    except KeyError:
        old_tmpdir = None
    for tmpdir in ['/tmp', '/var/tmp', '/usr/tmp']:
        if os.path.exists(tmpdir):
            os.environ["TMPDIR"] = tmpdir
            break

A reason is given for why this choice was made, but it is tripping me up in pipeline runs because /var or /tmp are not equipped to handle the amount of data that is copied in the final iteration since the whole MS is copied over to get the beam information from.