This test requires more than 32 static priorities by default, and
doesn't run with the multiq scheduler without a special configuration.
That used to be specified per-platform, but got moved to a separate
test case a while back.
This broke non-default platforms like qemu_cortex_m3 which use
SCHED_MULTIQ as their default backend. Put a filter in place instead
of going back to per-platform changes.
Fixes#19437
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
bbd910b2e2