basalt-26.3.2-rc-20260908: pkg/workload/fixture/fixture_test: TestImportFixtureNodeCount failed

pkg/workload/fixture/fixture_test.TestImportFixtureNodeCount [failed](https://mesolite.cluster.engflow.com/invocations/default/6cda6f11-f948-43b1-8648-858357aa7fb3?testReportRun=1&testReportShard=1&testReportAttempt=1#targets-Ly9wa2cvd29ya2xvYWQvZml4dHVyZTpmaXh0dXJlX3Rlc3Q=) on basalt-26.3.2-rc-20260908 @ [807558e5e81666af257c811e925e4cae570abc28](https://github.com/cockroachdb/cockroach/commits/807558e5e81666af257c811e925e4cae570abc28):

```
=== RUN TestImportFixtureNodeCount
test_log_scope.go:172: test logs captured to: outputs.zip/logTestImportFixtureNodeCount1237831203
test_log_scope.go:82: use -show-logs to present logs inline
test_server_shim.go:168: automatically injected an external process virtual cluster under test; see comment at top of test_server_shim.go for details.
```

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

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

/cc @cockroachlabs/test-eng

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

Start with pkg/workload/fixture/fixture_test.go and TestImportFixtureNodeCount, then inspect the linked test report and captured logs for the node-count mismatch. Reproduce the failure with the reported race-enabled test configuration. Done means the underlying failure is identified and the test passes reliably.

Written by the indexing model from the issue text.