ContentDialog's Title does not have HeadingLevel automation property set #10946
Description
Describe the bug
The title for a content dialog should have the AutomationProperties.HeadingLevel set to something (probably Level1 for simplicity).
Why is this important?
Users who rely on screen reader will feel difficulty in analyzing the structure of the page, if visually appearing heading is not defined as heading programmatically.
WCAG Reference link:
1.3.1 Info and Relationships
Steps to reproduce the bug
- Open WinUI 2 Gallery > Dialogs and Flyouts > ContentDialog
- Click "Show dialog"
- Use accessibility insights to check the heading level of the title of the ContentDialog
Actual behavior
no heading level set
Expected behavior
heading level should be set
Screenshots
NuGet package version
None
Windows version
No response
Additional context
Originally filed on Windows Terminal: microsoft/terminal#19686