Intent of should_count_events_in_dbBuffer_and_memBuffer

All 13 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 13 tests
- server/ 13 tests
  - service/ 13 tests
    
    history/ 13 tests
    
    TestEngineSuite/ 9 tests
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondActivityTaskCompletedByIdSuccess Inherited TestRespondActivityTaskCompletedByIdSuccess
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondActivityTaskCompletedConflictOnUpdate Inherited TestRespondActivityTaskCompletedConflictOnUpdate
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondActivityTaskCompletedIfTaskCompleted Inherited TestRespondActivityTaskCompletedIfTaskCompleted
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondActivityTaskCompletedSuccess Inherited TestRespondActivityTaskCompletedSuccess
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondActivityTaskCompletedUpdateExecutionFailed Inherited TestRespondActivityTaskCompletedUpdateExecutionFailed
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondWorkflowTaskCompletedBadCommandAttributes Inherited command_attr_validator.go ×1
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondWorkflowTaskCompletedCompleteWorkflowFailed Inherited workflow_task_completed_handler.go ×1
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondWorkflowTaskCompletedConflictOnUpdate Inherited api.go ×1
    
    go.temporal.io/server/service/history/TestEngineSuite/TestRespondWorkflowTaskCompletedFailWorkflowFailed Inherited workflow_task_completed_handler.go ×1
    
    TestTimerQueueActiveTaskExecutorSuite/ 2 tests
    
    go.temporal.io/server/service/history/TestTimerQueueActiveTaskExecutorSuite/TestProcessActivityTimeout_NoRetryPolicy_Noop Inherited TestProcessActivityTimeout_NoRetryPolicy_Noop
    
    go.temporal.io/server/service/history/TestTimerQueueActiveTaskExecutorSuite/TestProcessActivityTimeout_RetryPolicy_Noop Inherited TestProcessActivityTimeout_RetryPolicy_Noop
    
    TestTransferQueueActiveTaskExecutorSuite/ 1 test
    
    go.temporal.io/server/service/history/TestTransferQueueActiveTaskExecutorSuite/TestProcessActivityTask_Duplication Inherited transfer_queue_active_task_executor.go ×1
    
    historybuilder/ 1 test
    
    TestHistoryBuilder_NumBufferedEvents/ 1 test
    
    go.temporal.io/server/service/history/historybuilder/TestHistoryBuilder_NumBufferedEvents/should_count_events_in_dbBuffer_and_memBuffer Introduced here