fix: Update frontend workflows to catch TypeScript errors (#5347)

Co-authored-by: openhands <openhands@all-hands.dev>

.github/workflows/fe-unit-tests.yml

@@ -35,6 +35,9 @@ jobs:
       - name: Install dependencies
         working-directory: ./frontend
         run: npm ci
+      - name: Run TypeScript compilation
+        working-directory: ./frontend
+        run: npm run make-i18n && tsc
       - name: Run tests and collect coverage
         working-directory: ./frontend
         run: npm run test:coverage

.github/workflows/lint.yml

@@ -30,10 +30,11 @@ jobs:
         run: |
           cd frontend
           npm install --frozen-lockfile
-      - name: Lint
+      - name: Lint and TypeScript compilation
         run: |
           cd frontend
           npm run lint
+          npm run make-i18n && tsc
 
   # Run lint on the python code
   lint-python: