add imutable ids to some exam arrays to detect and log changes between two exams.

src/components/ExamEditor/Exercises/MatchSentences/index.tsx

@@ -18,6 +18,7 @@ import { toast } from 'react-toastify';
 import { DragEndEvent } from '@dnd-kit/core';
 import { handleMatchSentencesReorder } from '@/stores/examEditor/reorder/local';
 import PromptEdit from '../Shared/PromptEdit';
+import { uuidv4 } from '@firebase/util';
 
 const MatchSentences: React.FC<{ exercise: MatchSentencesExercise, sectionId: number }> = ({ exercise, sectionId }) => {
   const { currentModule, dispatch } = useExamEditorStore();
@@ -98,6 +99,7 @@ const MatchSentences: React.FC<{ exercise: MatchSentencesExercise, sectionId: nu
       sentences: [
         ...local.sentences,
         {
+          uuid: uuidv4(),
           id: newId,
           sentence: "",
           solution: ""