sql: TestDistSQLUnavailableHosts failed

sql.TestDistSQLUnavailableHosts [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsAwsLinuxArm64_UnitTests/20993732?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsAwsLinuxArm64_UnitTests/20993732?buildTab=artifacts#/) on release-26.1 @ [d5146c1261a0c5ec48d67858f2d06ad1fcdbb7fe](https://github.com/cockroachdb/cockroach/commits/d5146c1261a0c5ec48d67858f2d06ad1fcdbb7fe):

```
=== RUN TestDistSQLUnavailableHosts
test_log_scope.go:171: test logs captured to: /artifacts/tmp/_tmp/17b9b212a9f8f930df1697330cbbbb63/logTestDistSQLUnavailableHosts1376102929
test_log_scope.go:82: use -show-logs to present logs inline
distsql_physical_planner_test.go:831: -- test log scope end --
test logs left over in: /artifacts/tmp/_tmp/17b9b212a9f8f930df1697330cbbbb63/logTestDistSQLUnavailableHosts1376102929
--- FAIL: TestDistSQLUnavailableHosts (44.26s)
=== RUN TestDistSQLUnavailableHosts/unhealthy-nodes-in-single-tenant-mode
test_server_shim.go:668: DRPC is enabled (via override by TestingGlobalDRPCOption)
distsql_physical_planner_test.go:492: error scanning '&{0x4007262fc0 }': pq: context canceled
--- FAIL: TestDistSQLUnavailableHosts/unhealthy-nodes-in-single-tenant-mode (10.09s)
```
Help

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

Same failure on other branches

- #159413 sql: TestDistSQLUnavailableHosts failed [C-test-failure O-robot T-db-server branch-master]

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

Jira issue: CRDB-58813