* Ensure that we track additional member symbols in the VB binder context and populate the additional field/property symbols initialized by VB AsNew clause that initializes more than one field/property

Note: This change also includes an API change to `IPropertyInitializer` as VB WithEvents declaration with AsNew clause initializer can initialize multiple properties.
Fixes #17813

* Fix wording in some comments

* Address review feedback

* Fix build break

This was missed as part of #22774 for #22719.
Fixes #22719

Extract conversion and binary operator logic into reusable components, and refactor all instances to use it.

Fixes #23004.
Fixes #23009.
Related to #22548 and #22229.

This change is now just a test-only change that verifies the current behavior.

Don't print IgnoredArguments unless nonempty, added verification of Children property, addressed minor feedback items.

Fixes #23001