* build: bumping version of frontend-platform
We’re going to need to use the new getLoginRedirectUrl helper.
* Adding custom alerts for anonymous and unenrolled users.
- Anonymous users are prompted to sign in or register.
- Unenrolled users are prompted to enroll.
The alerts themselves are lazy-loaded as necessary, like the ContentLock component.
This PR also adds `customAlerts` to the AlertList, allowing an application to specify custom components to be shown as Alerts for a given alert code.
* refactor: Renaming enrollmentIsActive to isEnrolled
As per review feedback that the former wasn’t clear.
* If the user does not have access to the course, then redirect to the course outline.
In a subsequent PR, if this API call is made on the course outline page in the MFE, we’ll need to be able to prevent the redirect. But that view of the MFE doesn’t exist yet.
* Moving course outline redirect logic into CourseContainer.
This way, depending on the page calling fetchCourseMetadata, we can make an intelligent choice about whether we want to redirect, show a message, etc. By redirecting in the API call handler, then we took that choice away from ourselves.
