fix(client): block donation modal (#40899)

Co-authored-by: Kris Koishigawa <scissorsneedfoodtoo@gmail.com>

cypress/integration/learn/donate/donation-block-completion-modal.js

@@ -0,0 +1,45 @@
+/* global cy */
+
+describe('Donate page', () => {
+  before(() => {
+    cy.clearCookies();
+    cy.exec('npm run seed');
+    cy.login();
+  });
+
+  after(() => {
+    cy.exec('npm run seed');
+  });
+
+  const projects = [
+    'tribute-page',
+    'survey-form',
+    'product-landing-page',
+    'technical-documentation-page',
+    'personal-portfolio-webpage'
+  ];
+
+  it('Should be able to submit projects', () => {
+    const submitProject = str => {
+      cy.visit(
+        `/learn/responsive-web-design/responsive-web-design-projects/build-a-${str}`
+      );
+      cy.get('#dynamic-front-end-form')
+        .get('#solution')
+        .type('https://codepen.io/camperbot/full/oNvPqqo', {
+          force: true
+        });
+
+      cy.contains("I've completed this challenge").click();
+      cy.contains('Submit and go to next challenge').click();
+    };
+
+    projects.forEach(project => submitProject(project));
+  });
+
+  it('Should have a pop up modal', () => {
+    cy.contains(
+      'Nicely done. You just completed Responsive Web Design Projects.'
+    );
+  });
+});