AI Implementation feature(863): Challenges Page and Challenge Solve Modal (#45)

tests/frontend/jest.setup.ts

@@ -1,3 +1,8 @@
+// Required so Angular's `HttpRequest`/`HttpResponse` (used in unit
+// tests of HttpInterceptorFn logic) can be instantiated in tests without
+// pre-compiled metadata.
+import '@angular/compiler';
+
 Object.defineProperty(window, 'matchMedia', {
   writable: true,
   value: jest.fn().mockImplementation((query) => ({