fix: user content unavailable content issue for learner (#674)

src/discussions/data/hooks.js

@@ -13,6 +13,7 @@ import { useIntl } from '@edx/frontend-platform/i18n';
 import { AppContext } from '@edx/frontend-platform/react';
 import { breakpoints, useWindowSize } from '@edx/paragon';
 
+import fetchTab from '../../components/NavigationBar/data/thunks';
 import { RequestStatus, Routes } from '../../data/constants';
 import { selectTopicsUnderCategory } from '../../data/selectors';
 import fetchCourseBlocks from '../../data/thunks';
@@ -79,6 +80,7 @@ export function useCourseDiscussionData(courseId) {
     async function fetchBaseData() {
       await dispatch(fetchCourseConfig(courseId));
       await dispatch(fetchCourseBlocks(courseId, authenticatedUser.username));
+      await dispatch(fetchTab(courseId));
     }
 
     fetchBaseData();

src/discussions/data/selectors.js

@@ -76,10 +76,12 @@ export const selectIsUserLearner = createSelector(
     userIsCourseAdmin,
     userIsCourseStaff,
   ) => (
-    !userHasModerationPrivileges
-    && !userIsGroupTa
-    && !userIsStaff
-    && !userIsCourseAdmin
-    && !userIsCourseStaff
+    (
+      !userHasModerationPrivileges
+      && !userIsGroupTa
+      && !userIsStaff
+      && !userIsCourseAdmin
+      && !userIsCourseStaff
+    ) || false
   ),
 );