[AI chat] The error message does not appear when signing in with an external email

[YuriiDavydiak]

Library name and version

0.1.0

What steps will reproduce the bug?

1. Go to the STG env
2. Click on the 'Sign in now' button
3. Sign in using an email
4. Send a message
5. Pay attention to the page

What is the expected behavior?

Some error message should display (need to discuss)

What do you see instead?

The error message does not appear when signing in with an external email

Additional information

No response

[bohdan-ulianych]

The issue will be verified once access is granted to non-partner users.