[Bug] Obsolete some of the AutomationProperties?

[davidbritch]

Description

The recommendation for MAUI is to use SemanticProperties over AutomationProperties (where equivalents exist).

AutomationProperties.Name, AutomationProperties.HelpText, and AutomationProperties.LabeledBy seem to only be present for users migrating their apps from Xamarin.Forms. Name and HelpText have new SemanticProperties equivalents, and LabeledBy can be replaced by a binding. Therefore, can Name, HelpText, and LabeledBy be labelled with the Obsolete attribute? Without that, the doc will have to treat them as no less important than SemanticProperties which will result in an awful accessibility story, and user confusion.

[jfversluis]

Blocked until #8048 is implemented. Technically not blocked, we can already mark them as obsoleted, but it won't have much effect until the aforementioned issue is implemented.