Refactor lesson types and update review handling

- Changed lesson type from 'review' to 'weekly_review' in multiple lesson definitions across phase 3 and phase 4 extensions.
- Updated the logic in the vocabService to accommodate 'weekly_review' in various methods, ensuring proper handling of weekly review lessons.
- Modified the VocabLessonView component to recognize 'weekly_review' as a valid lesson type for calculations and access checks.
- Enhanced the didactics update script to include 'weekly_review' in the lesson type checks.
- Adjusted the create scripts to reflect the new lesson type for weekly reviews.

backend/scripts/create-bisaya-course.js

@@ -896,7 +896,7 @@ const LESSONS = [
     targetMin: 20, targetScore: 85, review: true,
     cultural: null },
   
-  { week: 1, day: 5, num: 9, type: 'review', title: 'Woche 1 - Wiederholung', 
+  { week: 1, day: 5, num: 9, type: 'weekly_review', title: 'Woche 1 - Wiederholung',
     desc: 'Wiederhole alle Inhalte der ersten Woche', 
     targetMin: 30, targetScore: 80, review: false,
     cultural: 'Wiederholung ist der Schlüssel zum Erfolg!' },
@@ -962,7 +962,7 @@ const LESSONS = [
     targetMin: 18, targetScore: 85, review: true,
     cultural: null },
 
-  { week: 2, day: 5, num: 22, type: 'review', title: 'Woche 2 - Wiederholung', 
+  { week: 2, day: 5, num: 22, type: 'weekly_review', title: 'Woche 2 - Wiederholung',
     desc: 'Wiederhole alle Inhalte der zweiten Woche', 
     targetMin: 30, targetScore: 80, review: false,
     cultural: null },