zink: flush active queries on destroy and free query object

zink: flush active queries on destroy and free query object

queries with a valid active_list pointer are likely to still be active,
and vk spec requires them to have completed prior to being destroyed

this isn't completely accurate, as it's currently possible for queries
to remain in the active list while not actually being active, but it
resolves driver crashes that can occur from destroying a stilll-running
query pool object

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5120>