kvcoord: deflake TestDistSenderReplicaStall

The test runs with expiration leases but when fortification is enabled
the lease doesn't move off of the stalled replica because the
deadlocked leader doesn't step down while it's receiving store liveness
support.

This commit ensures fortification is off when expiration leases are used
for the test.

Fixes: #136564

Release note: None

pkg/kv/kvclient/kvcoord/dist_sender_circuit_breaker_test.go

@@ -45,7 +45,7 @@ func TestDistSenderReplicaStall(t *testing.T) {
 		// The lease won't move unless we use expiration-based leases. We also
 		// speed up the test by reducing various intervals and timeouts.
 		st := cluster.MakeTestingClusterSettings()
-		kvserver.ExpirationLeasesOnly.Override(ctx, &st.SV, true)
+		kvserver.OverrideDefaultLeaseType(ctx, &st.SV, roachpb.LeaseExpiration)
 		kvcoord.CircuitBreakersMode.Override(
 			ctx, &st.SV, kvcoord.DistSenderCircuitBreakersAllRanges,
 		)