Intent of TestBackfillWorkflow_CurrentWorkflow_Closed_TransientWorkflowTaskNotUsable

All 1 exact test in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 1 test
- server/ 1 test
  - service/ 1 test
    
    history/ 1 test
    
    ndc/ 1 test
    
    TestTransactionMgrSuite/ 1 test
    
    go.temporal.io/server/service/history/ndc/TestTransactionMgrSuite/TestBackfillWorkflow_CurrentWorkflow_Closed_TransientWorkflowTaskNotUsable Introduced here