osd/osd_types: consider CRUSH_ITEM_NONE in check_new_interval() min_size check

Fixes: #9718
Backport: firefly
Signed-off-by: Sage Weil <sage@redhat.com>
Merge remote-tracking branches 'guangyy/wip-9614-followup' and 'upstream/wip-9718' into wip-sam-testing