[MAS2.4.6] [Headings and Labels - Open Bot Dialog] Heading should be defined for the pop-up or dialog.

[Kumar2608]

Actual Result:
When the user opens "Open Bot Dialog" button, dialog box opens but the voiceover didn't announces the name of the dialog box. This is because the name i.e. "Open a Bot" is not defined in heading.

Expected Result:
The name of the dialog box or pane should be defined under heading tag so that voiceover relevent information.

Note:
Same issue observed for each and every dialog box or pop-ups throughout the application.

Repro Steps:

1. Open the Bot Framework V4 Emulator.
2. Welcome tab screen gets opened.
3. Navigate to the "Open Bot" button and activate it.
4. Observe the issue.

User Impact:
Users who rely on voiceover will be affected if headings are not defined for screen then the users will be affected to navigate to the screen.

Test Environment:
OS: MacOs Version 10.15
Application: Bot Framework V4 Emulator (Version 4.5.2-80829)

Impacted MAS Link:
https://microsoft.sharepoint.com/:w:/r/teams/msenable/_layouts/15/WopiFrame.aspx?sourcedoc={0cf80872-800d-4643-90cf-0c1c3d3e6260}

Attachment:
Heading not defined.zip

[ShikhaMishra11]

Verified the issue and it is fixed in latest build.
OS: MacOs Version 10.15
Application: Bot Framework V4 Emulator (Version 4.5.2-85838)