Intent of tree.go ×2

All 9 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 9 tests
- server/ 9 tests
  - chasm/ 9 tests
    
    TestNodeSuite/ 5 tests
    
    TestApplyMutation_InvalidatesHydratedMapAncestors/ 1 test
    
    go.temporal.io/server/chasm/TestNodeSuite/TestApplyMutation_InvalidatesHydratedMapAncestors/DeleteMapItem Inherited DeleteMapItem
    
    go.temporal.io/server/chasm/TestNodeSuite/TestApplyMutation Inherited tree.go ×1
    
    go.temporal.io/server/chasm/TestNodeSuite/TestEachPureTask Inherited tree.go ×15
    
    go.temporal.io/server/chasm/TestNodeSuite/TestSyncSubComponents_DeleteLeafNode Inherited TestSyncSubComponents_DeleteLeafNode
    
    go.temporal.io/server/chasm/TestNodeSuite/TestSyncSubComponents_DeleteMiddleNode Inherited TestSyncSubComponents_DeleteMiddleNode
    
    lib/ 4 tests
    
    scheduler/ 4 tests
    
    go.temporal.io/server/chasm/lib/scheduler/TestBackfillTask_CompleteFill Inherited TestBackfillTask_CompleteFill
    
    go.temporal.io/server/chasm/lib/scheduler/TestBackfillTask_InclusiveStartEnd Inherited TestBackfillTask_InclusiveStartEnd
    
    go.temporal.io/server/chasm/lib/scheduler/TestBackfillTask_TriggerImmediate Inherited backfiller_tasks.go ×2
    
    go.temporal.io/server/chasm/lib/scheduler/TestCreateSchedulerFromMigration Inherited scheduler.go ×1