Enable VRT inputs

Author: sjd210

src/mocks/handlers.ts

@@ -213,7 +213,12 @@ export const handlers = [
             status: 200,
         });
     }),
-    http.post(API_PATH + "/questions/_llm_marked_regression_test_|INSERTID/answer", () => {
+    http.get(API_PATH + "/questions/isaacLLMFreeTextQuestion/can_attempt", () => {
+        return HttpResponse.json({"remainingAttempts": 30}, { 
+            status: 200, 
+        });
+    }),
+    http.post(API_PATH + "/questions/_regression_test_llm_/answer", () => {
         return HttpResponse.json(mockLLMMarkedValidationResponse, { 
             status: 200, 
         });

src/test/pages/LLMFreeTextQuestion.cy.tsx

@@ -8,5 +8,10 @@ it('LLM-marked question page should have no visual regressions', () => {
 
     cy.get('[data-testid="loading"]').should('not.exist');
 
+    cy.get('textarea').type('Hello world');
+    cy.get('input').contains('Check my answer').click();
+
+    cy.scrollTo('top');
+
     cy.matchImage();
 });