Currently, CI does not pass if we just toggle on the CommunityConfiguration in config.
The phpunit tests see a lot of failures:
```
18:05:31 ERRORS!
18:05:31 Tests: 26253, Assertions: 80279, Errors: 38, Failures: 1, Skipped: 124.
```
And also the MentorDashboard Selenium tests are failing:
```
18:03:43 [Chrome 90.0.4430.212 linux #0-3] » /tests/selenium/specs/mentordashboard.js
18:03:43 [Chrome 90.0.4430.212 linux #0-3] Special:MentorDashboard
18:03:43 [Chrome 90.0.4430.212 linux #0-3] ✓ Does not trigger errors when visited
18:03:43 [Chrome 90.0.4430.212 linux #0-3] ✖ Prompts to enroll as a mentor
18:03:43 [Chrome 90.0.4430.212 linux #0-3] ✖ Allows enrolling as a mentor
18:03:43 [Chrome 90.0.4430.212 linux #0-3]
18:03:43 [Chrome 90.0.4430.212 linux #0-3] 1 passing (14.1s)
18:03:43 [Chrome 90.0.4430.212 linux #0-3] 2 failing
18:03:43 [Chrome 90.0.4430.212 linux #0-3]
```
**Acceptance Criteria:**
* [ ] GEUseCommunityConfigurationExtension is set to `true` in CI
* [ ] CI is green for the master branch of GE
**Notes:**
* This task is blocked on all GE wikis in production using CC first. That means in particular:
* {T366458}
* {T369711}