server: investigate why TestStatusVarsTxnMetrics does not work with a shared process virtual cluster #112953
Description
Describe the problem
When running TestStatusVarsTxnMetrics with a shared process virtual cluster the expected result does not always contain the tenant label. There are discrepancies between external and shared processes for this test in the expected results.
How to reproduce
Set the following in TestServerArgs to force a shared process tenant and cause the failure to happen.
DefaultTestTenant: base.SharedTestTenantAlwaysEnabled,
Expected behavior
The test should pass when running with a shared process virtual cluster, unless after investigation the test is expected not to work with one.
Ref: #112857
Epic CRDB-38970
Jira issue: CRDB-32691