…atus during onboarding

- Added `teach` parameter to the onboarding flow to allow users to override the absence of the instructor role, especially for those coming through enrollment links.
- Updated `onboard` method in `OnboardingController` to check for the `teach` parameter and grant instructor permissions when present.
- Modified view logic to adjust button layouts and added styles for course creation and orientation review buttons on the dashboard.

…all users regardless of user role

… training modules