mgr/dashboard: fix server side table sort

mgr/dashboard: fix server side table sort

show a loading screen when the sort is being performed through
server-side since the sort will happen a little slow

It will be more visible in bigger environments, and with test env if you
try to sort too many time in a short interval and you start to see some
inconsistencies. This is only there for tables like OSDs or hosts where
we have the server side rendering enabled

Fixes: https://tracker.ceph.com/issues/73994
Signed-off-by: Nizamudeen A <nia@redhat.com>