kv/kvserver: TestTenantRateLimiter failed about cockroach

[pav-kv]

Looks similar to #123060, #122347, and #123060.

[arulajmani]

Yup, confirmed. We see from the logs:

W240530 06:03:31.544126 20829 kv/kvclient/kvcoord/dist_sender.go:2767 ⋮ [T10,Vcluster-10,nsql1] 395  slow replica RPC: have been waiting 115.18s (0 attempts) for RPC Get [/Tenant/10/Table/39/2/‹"\x80"›/‹"\x01\x01\x803\t\xe9\xe4\xdc\x1aK\x93\xa1\xb5\xb4P\x81\x16.1"›/‹0›], [txn: 87d9863e], [can-forward-ts] to replica (n1,s1):1; resp: ‹(err: <nil>), *kvpb.GetResponse›
W240530 06:03:31.544209 25219 kv/kvclient/kvcoord/dist_sender.go:2767 ⋮ [T10,Vcluster-10,nsql1,intExec=‹expire-sessions›] 396  slow replica RPC: have been waiting 108.89s (0 attempts) for RPC Scan [/Tenant/10/Table/15/4,/Tenant/10/Table/15/5), [txn: 6dec0fe0], [can-forward-ts], [max_span_request_keys: 0], [target_bytes: 26] to replica (n1,s1):1; resp: ‹(err: <nil>), *kvpb.ScanResponse›
W240530 06:03:31.544126 25150 kv/kvclient/kvcoord/dist_sender.go:2767 ⋮ [T10,Vcluster-10,nsql1,intExec=‹stmt-diag-poll›] 397  slow replica RPC: have been waiting 110.01s (0 attempts) for RPC Scan [/Tenant/10/Table/35/2/‹0›,/Tenant/10/Table/35/2/‹1›), [txn: e191e587], [can-forward-ts], [max_span_request_keys: 0], [target_bytes: 26] to replica (n1,s1):1; resp: ‹(err: <nil>), *kvpb.ScanResponse›