basalt-26.3: crosscluster/logical/txnmode: TestTxnModeLWW failed

crosscluster/logical/txnmode.TestTxnModeLWW [failed](https://mesolite.cluster.engflow.com/invocations/default/d239d62a-5965-4976-9f91-d90c819f20c9?testReportRun=1&testReportShard=3&testReportAttempt=1#targets-Ly9wa2cvY3Jvc3NjbHVzdGVyL2xvZ2ljYWwvdHhubW9kZTp0eG5tb2RlX3Rlc3Q=) on basalt-26.3 @ [017b84cd0101b832a6ee0c1934d073d108d0b24a](https://github.com/cockroachdb/cockroach/commits/017b84cd0101b832a6ee0c1934d073d108d0b24a):

```
=== RUN TestTxnModeLWW
test_log_scope.go:172: test logs captured to: outputs.zip/logTestTxnModeLWW593282718
test_log_scope.go:82: use -show-logs to present logs inline
test_server_shim.go:168: automatically injected a shared process virtual cluster under test; see comment at top of test_server_shim.go for details.
=== RUN TestTxnModeLWW/transactional
```

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

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

/cc @cockroachlabs/cdc

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

Jira issue: CRDB-68058

Start with crosscluster/logical/txnmode.TestTxnModeLWW and rerun the transactional case with race=true, using -show-logs to inspect the captured output at outputs.zip/logTestTxnModeLWW593282718. Read the referenced test_log_scope.go and test_server_shim.go context, then determine the failure cause; done means the test passes reliably on the affected configuration.

Written by the indexing model from the issue text.