Consider mapping accessible name change events

[mfairchild365]

Core-AAM provides mappings for name change events that occur via aria-label and aria-labelledby.

It might be worthwhile to map HTML based name changes to appropriate events in HTML-aam. For example, the <label> of a form control, or the innerText of a <button> or <a href>.

[scottaohara]

so this is mapped in core aam

MSAA + IAccessible2 event
EVENT_OBJECT_NAMECHANGE

UIA event
PropertyChangedEvent
Property for aria-label: AriaProperties
Property for aria-labelledby: LabeledBy

ATK/AT-SPI event
object:property-change:accessible-name

I think what likely needs to be done here is this needs to be specifically called out at the start or end of of a general naming algorithm (there is a lot of redundancy that could be cut down here) to indicate that if the name changes, to ensure that changed name is exposed via the platform's event for this.

[cookiecrook]

FYI noticed this while reviewing the PR

• Core-AAM state/prop change section needs rewrite core-aam#198