Merge #140391

140391: kvserver: deflake TestClosedTimestampFrozenAfterSubsumption r=iskettaneh a=iskettaneh

In very rare cases under deadlock, it seems that the timing causes the storeliveness support to get withdrawn at times when the test doesn't expect.

Fixes: #140323

Release note: None

Co-authored-by: Ibrahim Kettaneh <[email protected]>

Author: craig[bot]

pkg/kv/kvserver/closed_timestamp_test.go

@@ -625,6 +625,7 @@ func TestClosedTimestampFrozenAfterSubsumption(t *testing.T) {
 	defer log.Scope(t).Close(t)
 
 	skip.UnderRace(t)
+	skip.UnderDeadlock(t)
 
 	for _, test := range []struct {
 		name string