Intent of When_ExternalWorkflowExecutionCancelRequested_added_it_will_be_placed_in_MemBuffer, When_ExternalWorkflowExecutionCancelRequested_added_it_will_be_placed_in_MemBuffer

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 5 tests
- server/ 5 tests
  - service/ 5 tests
    
    history/ 5 tests
    
    TestTransferQueueActiveTaskExecutorSuite/ 2 tests
    
    go.temporal.io/server/service/history/TestTransferQueueActiveTaskExecutorSuite/TestProcessCancelExecution_Duplication Inherited transfer_queue_active_task_executor.go ×1
    
    go.temporal.io/server/service/history/TestTransferQueueActiveTaskExecutorSuite/TestProcessCancelExecution_Success Inherited transfer_queue_active_task_executor.go ×4
    
    TestTransferQueueStandbyTaskExecutorSuite/ 1 test
    
    go.temporal.io/server/service/history/TestTransferQueueStandbyTaskExecutorSuite/TestProcessCancelExecution_Success Inherited transfer_queue_standby_task_executor.go ×1
    
    historybuilder/ 2 tests
    
    TestHistoryBuilder_AddDifferentEvents/ 1 test
    
    go.temporal.io/server/service/history/historybuilder/TestHistoryBuilder_AddDifferentEvents/When_ExternalWorkflowExecutionCancelRequested_added_it_will_be_placed_in_MemBuffer Introduced here
    
    TestHistoryBuilder_AddDifferentEvents_WorkflowFinishEvents/ 1 test
    
    go.temporal.io/server/service/history/historybuilder/TestHistoryBuilder_AddDifferentEvents_WorkflowFinishEvents/When_ExternalWorkflowExecutionCancelRequested_added_it_will_be_placed_in_MemBuffer Introduced here