Error message for different error conditions during studio login are same

The error message shown for different error conditions for studio login should be based on the error conditions. Currently the same message is shown.

This is a regression as in earlier versions of Studio the messages were different for different scenarios.

Steps to Reproduce:
1. Install and launch Studio.
2. On the login screen enter invalid credentials and click on Login
or
2. With no network connection, enter credentials and click on Login

Actual Result:
The error message is always the same. Refer to attached screenshots for the message shown in 4.0 release and also the screenshot for different messages shown in 3.4.2 Studio

Expected Result:
The error messages should be more informative and based on the error condition