Instructor Dashboard enabled by default

### Description

Instructor Dash is going to be enabled by default in Verawood.

1. Find out what the name of the backend flag is
2. Add it to a conditional in tutor-mfe as usual
3. Turn the frontend app on in tutor-mfe as well

### Related PRs

- https://github.com/openedx/openedx-platform/pull/38396
- https://github.com/overhangio/tutor-mfe/pull/285