Intent of observable.test|title=observables autorunPerKeyedItem batches per-key value updates atomically across one items change|occurrence=1

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 3 tests
- base/ 3 tests
  - test/ 3 tests
    
    common/ 3 tests
    
    observables/ 3 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/observables/observable.test|title=observables autorunPerKeyedItem batches per-key value updates atomically across one items change|occurrence=1 Introduced here
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/observables/observable.test|title=observables autorunPerKeyedItem does not fire per-key observable when same item identity is reused|occurrence=1 Inherited observable.test|title=observables autorunPerKeyedItem does not fire per-key observable when same item identity is reused|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/observables/observable.test|title=observables autorunPerKeyedItem runs setup once per key, fires per-key observable on in-place value change, disposes on removal|occurrence=1 Inherited autorun.ts ×1