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

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

@@ -17,6 +17,7 @@ import { validateQuestions, validateEmptySolutions, validateWordCount } from "./
 import Header from "../../Shared/Header";
 import BlanksFormEditor from "./BlanksFormEditor";
 import PromptEdit from "../Shared/PromptEdit";
+import { uuidv4 } from "@firebase/util";
 
 
 const WriteBlanksForm: React.FC<{ sectionId: number; exercise: WriteBlanksExercise }> = ({ sectionId, exercise }) => {
@@ -111,6 +112,7 @@ const WriteBlanksForm: React.FC<{ sectionId: number; exercise: WriteBlanksExerci
 
         const newLine = `New question with blank {{${newId}}}`;
         const updatedQuestions = [...parsedQuestions, {
+            uuid: uuidv4(),
             id: newId,
             parts: parseLine(newLine),
             editingPlaceholders: true
@@ -121,6 +123,7 @@ const WriteBlanksForm: React.FC<{ sectionId: number; exercise: WriteBlanksExerci
             .join('\\n') + '\\n';
 
         const updatedSolutions = [...local.solutions, {
+            uuid: uuidv4(),
             id: newId,
             solution: [""]
         }];