Intent of TestNode_Walk

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
    
    hsm/ 3 tests
    
    go.temporal.io/server/service/history/hsm/TestNode_ComplexHierarchicalDeletions Inherited TestNode_ComplexHierarchicalDeletions
    
    go.temporal.io/server/service/history/hsm/TestNode_PathPrefixEdgeCases Inherited TestNode_PathPrefixEdgeCases
    
    go.temporal.io/server/service/history/hsm/TestNode_Walk Introduced here
    
    replication/ 1 test
    
    TestSyncWorkflowState/ 1 test
    
    go.temporal.io/server/service/history/replication/TestSyncWorkflowState/TestGetUpdatedSubStateMachine Inherited sync_state_retriever.go ×3
    
    workflow/ 1 test
    
    TestTaskRefresherSuite/ 1 test
    
    go.temporal.io/server/service/history/workflow/TestTaskRefresherSuite/TestRefreshSubStateMachineTasks Inherited task_refresher.go ×6