Remove Auth Path from IDP Endpoint

[Artem-Zahumonnyi]

Is your feature request related to a problem? Please describe.
Currently, the IDP endpoint includes an auth path which may be unnecessary or lead to complications in certain deployment scenarios.

Describe the solution you'd like
The auth path should be removed from the IDP endpoint to simplify the configuration and possibly enhance compatibility with various IDP providers.

Describe alternatives you've considered
N/A - the primary solution is to remove the auth path. However, we're open to suggestions if there are reasons to keep it with configurable options.

Additional context
This change is aimed at streamlining the IDP endpoint configuration and ensuring broader compatibility with minimal configuration.

Acceptance Criteria:

• The IDP endpoint no longer contains the auth path.
• Documentation is updated to reflect this change.
• Tests are conducted to ensure this does not adversely affect existing functionalities.

Implementation Plan:

• Review the current implementation of the IDP endpoint.
• Identify where the auth path is appended to the endpoint.
• Implement the change to remove the auth path.
• Update the documentation accordingly.
• Conduct thorough testing to ensure compatibility and no regression in functionality.