Chromium Edge doesn't recognize the role="alert" attribute to trigger windows Narrator.

[xingzho]

With windows narrator, it works fine on Google Chrome when a error element with role="alert" becomes "aria-hidden="false"". However, it seems like it isn't working for Chromium edge.

1. Launch URL: https://xinaxutest2.b2clogin.com/xinaxutest2.onmicrosoft.com/oauth2/v2.0/authorize?p=B2C_1_suv3&clie...

2. Navigate to "Choose your account" window and select "User ID Sign Up" button

3. Input a few characters in the first field and then delete all.

4-Verify the issue.

Actual:

Narrator doesn't announce the error message "This information is required.". 

Expected:

Narrator should announce the error message "This information is required.".