TabView: Screen reader does not provide any confirmation after opening/closing new tab

[carlos-zamora]

Describe the bug
Opening and closing a (new) tab when a screen reader is active should notify the user with a confirmation message.

Steps to reproduce the bug
Steps to reproduce the behavior:

1. Go to TabView page in XAML Controls Gallery
2. Enable your screen reader (I used Narrator and NVDA)
3. Use your keyboard or mouse to navigate open or close a (new) tab

Expected behavior
In Chromium Edge, opening a new tab has Narrator/NVDA say "opening new tab" and closing a tab has Narrator/NVDA say "closing tab". This behavior should be consistent with the TabView.

Screenshots
Not a visual bug

Version Info
Using XAML Controls Gallery v1.2.16.0

NuGet package version: ?

Windows app type:

UWP	Win32
Yes	No?

Windows 10 version	Saw the problem?
Insider Build (xxxxx)
May 2020 Update (19041)
November 2019 Update (18363)
May 2019 Update (18362)
October 2018 Update (17763)
April 2018 Update (17134)
Fall Creators Update (16299)
Creators Update (15063)

Device form factor	Saw the problem?
Desktop
Xbox
Surface Hub
IoT

Additional context
I think this is a TabView bug, not a XAML Controls Gallery bug.
microsoft/terminal#8464 was filed on Windows Terminal during accessibility testing.

[marcelwgn]

@YuliKl @stmoy Do you think that this is already covered by #1883? Otherwise, what do you think would be the best way to fix this (especially given that #3469 still seems to be an issue)?

[github-actions]

This issue is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[carlos-zamora]

This is still an issue. Unless y'all want to dup it to #1883.

[DmitriyKomin]

@carlos-zamora, thank you for reporting the issue. Unfortunately we are not currently investigating WinUI2 issues that are not business or security critical (more on the policy here).