[BB-6438] Check if feature is enabled before calling enterprise api

[pkulkark]

Description

This PR fixes the issue of django messages being read before redirecting to dashboard page, due to enterprise api being
called even if the feature is disabled. Before maple release, there used to be a waffle switch named ENABLE_MULTIPLE_USER_ENTERPRISES_FEATURE that was checked before calling the api. This was deprecated in edx-platform#28057 but was not replaced by any other check for enterprise integration. And so after each login, the enterprise api would be called, which would return 404 but was fetching the django messages (which clears it) and so page banner messages wouldn't show up when the user was redirected to the dashboard page.

Supporting Information

JIRA: BB-6438

Testing Instructions

1. Deploy this branch
2. Create a new user account and activate it
3. In lms.yml and studio.yml files, under AUTH_PASSWORD_VALIDATORS update the minimum password length requirement to longer than the one you set in the previous step.
4. Ensure you enable the complaince check by the setting the following config and restart the services:

PASSWORD_POLICY_COMPLIANCE_ROLLOUT_CONFIG:
    ENFORCE_COMPLIANCE_ON_LOGIN: true
    GENERAL_USER_COMPLIANCE_DEADLINE: '2022-08-01 00:00:00+00:00'

5. Now login with the same user credentials and verify that the warning message is seen on the dashboard.

[navinkarkera]

👍

• I tested this on sandbox
• I read through the code
• I checked for accessibility issues
• Includes documentation
• I made sure any change in configuration variables is reflected in the corresponding client's configuration-secure repository.