[Screen Reader - Open and close New Tab]: Screen reader does not announce position number for the tabs navigating via "Ctrl+Tab" or "Ctrl+Shift+Tab" key.

[Chandresh1007]

User Experience:
If the correct information and relationships are not provided, it would be difficult for people with different disabilities as the information and relationships that are implied by visual or auditory formatting will not be preserved when the presentation format changes.
Having these structures and these relationships programmatically determined or available in text ensures that information important for comprehension will be perceivable to all.

Test Environment:
OS: Win 10 2004 Build (20262.1010)
App: Windows Terminal
App version: 1.4.3243.0

Repro Steps:

1. Open Windows terminal app.
2. Launch Narrator.
3. Press "Ctrl+Shift+T" to open multiple tabs.
4. Now press "Ctrl+Tab" or "Ctrl+Shift+Tab" key to navigate between tabs.
5. Observe the issue.

Actual Result:
Screen reader does not announce position number for the tabs navigating via "Ctrl+Tab" or "Ctrl+Shift+Tab" key.

Expected Result:
Screen reader should announce the position number for the tabs navigating via "Ctrl+Tab" or "Ctrl+Shift+Tab" key.
For e.g. If total 5 tabs are present and currently the focus is at 3rd tab then narrator should announce it as "3of 5".

Note: Same issue repro with NVDA.

Observation: In scan mode narrator announces position number.

MAS Reference:
https://microsoft.sharepoint.com/:w:/r/teams/msenable/_layouts/15/WopiFrame.aspx?sourcedoc=%7B54f28d1f-a2d1-4dcd-84e1-5c9b87e8aba4%7D&cid=a7f80d30-34d6-4e03-af19-fa3c97a5bf31

MAS1.3.1_Position no does not get announced for tabs.zip

[zadjii-msft]

I'm guessing that this is the same thing as #8464, where we provide a little bit of metadata in the message. /cc @carlos-zamora