ublk: let ublk_fill_io_cmd() cover more things

Let ublk_fill_io_cmd() clear UBLK_IO_FLAG_OWNED_BY_SRV too.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250713143415.2857561-5-ming.lei@redhat.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>