fix: [AA-1207] unify source of tabs (#861)

Courseware and courseHome both provide tabs to the mfe.
This PR unifies the calls so that tab descriptions are only fetched from courseHome metadata

Remove jest-chain dependencies to make test errors more usable.

src/courseware/data/thunks.js

@@ -29,7 +29,7 @@ export function fetchCourse(courseId) {
     Promise.allSettled([
       getCourseMetadata(courseId),
       getLearningSequencesOutline(courseId),
-      getCourseHomeCourseMetadata(courseId),
+      getCourseHomeCourseMetadata(courseId, 'courseware'),
     ]).then(([
       courseMetadataResult,
       learningSequencesOutlineResult,