[Usable- Bot App]: ' NVDA is announcing disable on required edit field.

[ShikhaMishra11]

Actual Result: When focus reach to mandatory edit filed, NVDA reports invalid even the edit field is blank which is confusing for screen reader

Expected Result: 'Invalid' announcement for required/mandatory field should not be announced by NVDA.

Repro Steps: 1.Turn on NVDA 2. Switch on the Bot framework emulator 3. Activate 'Create new bot-configuration' button and select it. 4. Navigate to edit field 5. Observe NVDA announcement.

User Impact: Users who rely on Screen Readers will be affected by announcement if NVDA reports invalid for blank mandatory field.

Test Environment: Platform: Win32 Application: Bot Framework V4 Emulator (Version 4.7.1) OS Build: Version 2004 (OS Build 19541.1000) Tool: NVDA

Guideline Reference https://microsoft.sharepoint.com/:w:/r/teams/msenable/_layouts/15/Doc.aspx?sourcedoc=%7BF98F4235-B6BD-47D3-8DA4-F28B9B6FBFA8%7D&file=Guideline%20101%20%E2%80%93%20Recommended%20Assistive%20Technology%20Tools%20for%20MAS%20Testing%20of%20Microsoft%20Digital%20Properties.docx&action=default&mobileredirect=true&cid=441f476a-2092-4dde-8403-70dcb430a62e

Attachment: Invalid announcement-DT issue.zip