* [ADF-5580] emit commentAdded event from adf-comments component
* [ADF-5580] Emit commentAdded event from adf-comments and expose it in adf-node-comments
* [ADF-5580] Emit commentAdded event from NodeCommentsComponent, add unit test, and update docs
* [ADF-5580] Add unit test for commentAdded output in NodeCommentsComponent, update docs and create testing utils
* [ADF-5580] Mark debugElement as readOnly
* [ADF-5580] Add mock services and fix unit test setup
* [ADF-5580] Reuse shared comment mocks across multiple test files
* [ADF-5580] Align comments component documentation
* [ADF-5580] Remove redundant setup and use ContentTestingModule in comment components tests