Screen readers do not announce changes that automatically occur upon entering Email in the edit field, leaving users unaware of dynamically updated information.

### Expected Behaviour
Screen Readers should announce automatic changes in edit fields to keep users informed of dynamically updated information, like loading or progress info and once the page has loaded. It should announce the page title as well.
### Actual Behaviour
Users do not receive auditory feedback from screen readers when automatic changes occur on entering Email ID in the edit field. Screen reader remains silent once the new page opens.

https://github.com/user-attachments/assets/565b7e98-4c3b-43b8-a9e7-9faaf93fd37d

### Reproduce Scenario (including but not limited to)

#### Steps to Reproduce

1. Open URL [https://www.adobe.com/acrobat/pdf-reader.html](https://nam06.safelinks.protection.outlook.com/?url=https:%2f%2fwww.adobe.com%2facrobat%2fpdf-reader.html&data=05%7c02%7cv-ymounika%40microsoft.com%7cfc695922b7c34646c2c008dcbb5ebd70%7c72f988bf86f141af91ab2d7cd011db47%7c1%7c0%7c638591262795256923%7cUnknown%7cTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7c0%7c%7c%7c&sdata=o9PY7goIjRXOoVaVs7vxiVonXaIBKfShZ6rnvhgxgDw%3D&reserved=0) in edge browser.
2. Turn on Screen reader using 'Ctrl+ Win+ Enter'.
3. Navigate to the Sing button and activate it.
4. Sign in page will be open.
5. Choose 'Continue with Google’ to sign-in.
6. Enter Email ID and activate Continue button. Page starts to load and redirects to Welcome back page.
7. Screen Reader will announce dynamically updated information.
8. Logout from already login account.
9. Again, try to login with same credentials.
10. Verify screen readers announcement, whether it is announcing the “Welcome back page” information or not.

#### Platform and Version
OS: Windows 11 Version 24H2 (OS Build 26100.1301)
Browser: Microsoft New Edge Version 127.0.2651.86 (Official build) (64-bit)

Test Credentials: testu4496@gmail.com / !India@123
#### Sample Code that illustrates the problem
[https://www.adobe.com/acrobat/pdf-reader.html](https://nam06.safelinks.protection.outlook.com/?url=https:%2f%2fwww.adobe.com%2facrobat%2fpdf-reader.html&data=05%7c02%7cv-ymounika%40microsoft.com%7cfc695922b7c34646c2c008dcbb5ebd70%7c72f988bf86f141af91ab2d7cd011db47%7c1%7c0%7c638591262795256923%7cUnknown%7cTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7c0%7c%7c%7c&sdata=o9PY7goIjRXOoVaVs7vxiVonXaIBKfShZ6rnvhgxgDw%3D&reserved=0)
#### Logs taken while reproducing problem

まず、Windows 11 の Microsoft Edge でスクリーンリーダーを使用し、記載されているサインイン手順に従って、Adobe Acrobat PDF Reader の URL で問題を再現します。初回および繰り返しのログイン試行でのアナウンスを比較し、ページタイトルと動的な読み込みまたはリダイレクト情報を含めます。スクリーンリーダーが関連する変更を確実にアナウンスできれば完了です。

索引モデルが issue の本文から書いたものです。