[MAS4.1.2] Name is not defined for close button.

[ShikhaMishra11]

Actual Result:
User will unable to understand the purpose of the button.

Expected Result:
Name should be defined for the "Close" (x) button available under '
My Bots' section.

Test Environment
Platform: Mac 10.15.3 Beta (19D49f)
App: Bot Framework Emulator V4
App version: Version 4.7.0-99577 (4.7.0-99577.99577)
Tool: Voice Over

Repro Steps:
1.Open the Bot Framework V4 Emulator.
2. Welcome tab screen gets opened.
3. Navigate to controls (x) icon available under my bot section.
4. Observe the Voiceover announcement.

User Impact:
User will unable to understand the purpose of the control (X) button, if name is not properly defined it will impact of efficiency of the screen reader dependent user.

Impacted MAS Link:
(https://microsoft.sharepoint.com/:w:/r/teams/msenable/_layouts/15/WopiFrame.aspx?sourcedoc={248054a6-5e68-4771-9e1e-242fb5025730})

Attachment
close button - DT issue.zip

[tonyanziano]

Ready to be reviewed in the latest nightly.

[ashish315]

@tonyanziano As we have checked the issue has been resolved. So, we are good to close the issue.