A11y_AzureNotebooks_Jupyter_FilesTab_ScreenReader:Narrator is reading "Files","NbExtensions","Running" tab as link.

[AccessibilityTestingTeam-TCS]

EnvironmentDetails:
Application Name:AzureNotebooks_Jyupter
Login Url: notebooks.azure.com
BrowserDetails:
Edge:Microsoft Edge 41.16299.611.0
Chrome:Version 68.0.3440.106
Operating System:Windows10
Steps to reproduce:
1.Login with the appropriate credentials to azure notebook account.
2.Go to Get started à libraries à Select any of the libraries à click on clone to clone the library
3.Click on Run or right click and select Run to run the notebook.
5.Navigate to the "Files" tab.
6.Start the Narrator.
Actual:
Issue1:
Narrator is reading "Files","NbExtensions","Running" tab as link.
Issue2:
Narrator is not reading the dynamics changes in the selelection of the"Files","NbExtensions","Running" tabs.
Expected:
Issue1:
Narrator should read "Files","NbExtensions","Running" tab as TabItem..
Issue2:
As soon as we select the the"Files","NbExtensions","Running" tab , Narrator should read it selected.

UserImpact:
User will not get any information regarding the tab items and which tab item is selected.
Attachment:
A11y_AzureNotebooks_Jupyter_FilesTab_ScreenReader9.pptx

[jtpio]

Closing as there are now different issues tracking accessibility improvements for Jupyter Notebook 7, for example #6800

Thanks!