Adaptive learning: Fix an issue with competency progress calculation

src/main/java/de/tum/cit/aet/artemis/atlas/repository/CourseCompetencyRepository.java

@@ -126,7 +126,7 @@ CASE WHEN TYPE(e) = ProgrammingExercise THEN TRUE ELSE FALSE END,
                 LEFT JOIN TeamScore tS ON tS.exercise = e AND :user MEMBER OF tS.team.students
             WHERE c.id = :competencyId
                 AND e IS NOT NULL
-            GROUP BY e.id, e.maxPoints, e.difficulty, TYPE(e), sS.lastScore, tS.lastScore, sS.lastPoints, tS.lastPoints, sS.lastModifiedDate, tS.lastModifiedDate
+            GROUP BY e.id, e.maxPoints, e.difficulty, TYPE(e), el.weight, sS.lastScore, tS.lastScore, sS.lastPoints, tS.lastPoints, sS.lastModifiedDate, tS.lastModifiedDate
             """)
     Set<CompetencyExerciseMasteryCalculationDTO> findAllExerciseInfoByCompetencyIdAndUser(@Param("competencyId") long competencyId, @Param("user") User user);