[Accessibility] Accessibility requirements should be indicated per-control

[citelao]

Which version of the app?

WinUI 3 Gallery

Description

Certain controls always have specific accessibility requirements—for example, TextBoxes and Images (and typically *Views) always need an accessible name.

We should be explicit and add that information to the examples for each page. For example, we should indicate that requirement on the TextBox page and the Image page (not just the Screen reader page).

Screenshots

No response

Windows version

No response

Additional context

No response