kv/kvserver: TestFlowControlRangeSplitMerge failed

kv/kvserver.TestFlowControlRangeSplitMerge [failed](https://mesolite.cluster.engflow.com/invocations/default/c6f1c6fd-52f0-4794-9bde-e1866377136a?testReportRun=3&testReportShard=44&testReportAttempt=1#targets-Ly9wa2cva3Yva3ZzZXJ2ZXI6a3ZzZXJ2ZXJfdGVzdA==) on release-24.1 @ [7abfb80681bb3a3a98cf4c69488e9234413c4843](https://github.com/cockroachdb/cockroach/commits/7abfb80681bb3a3a98cf4c69488e9234413c4843):

```
=== RUN TestFlowControlRangeSplitMerge
test_log_scope.go:165: test logs captured to: outputs.zip/logTestFlowControlRangeSplitMerge2871059606
test_log_scope.go:76: use -show-logs to present logs inline
datadriven.go:144:
/mnt/engflow/worker/work/0/exec/bazel-out/k8-fastbuild/bin/pkg/kv/kvserver/kvserver_test_/kvserver_test.runfiles/com_github_cockroachdb_cockroach/pkg/kv/kvserver/testdata/flow_control_integration/split_merge:1:

output didn't match expected:
@@ -77,7 +77,6 @@
GROUP BY (range_id)
ORDER BY streams DESC;

range_id | stream_count
-----------+---------------
- 69 | 3

panic.go:626: -- test log scope end --
test logs left over in: outputs.zip/logTestFlowControlRangeSplitMerge2871059606
--- FAIL: TestFlowControlRangeSplitMerge (27.45s)
```

Parameters:
- attempt=1
- race=true
- run=3
- shard=44
Help

See also: [How To Investigate a Go Test Failure \(internal\)](https://cockroachlabs.atlassian.net/l/c/HgfXfJgM)

/cc @cockroachdb/kv-triage

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*TestFlowControlRangeSplitMerge.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-53790