feat: change monaco shortcut (#45627)

* feat: change monaco shortcut

* fix: oops I lost the eslint-enable comment

* feat(tests): add cypress tests

cypress/integration/learn/common-components/editor.js

@@ -0,0 +1,29 @@
+const selectors = {
+  editor: '.monaco-editor'
+};
+
+describe('Editor Shortcuts', () => {
+  it('Should handle Alt+Enter', () => {
+    cy.visit(
+      'learn/responsive-web-design/basic-html-and-html5/say-hello-to-html-elements'
+    );
+    cy.get(selectors.editor, { timeout: 15000 })
+      .first()
+      .click()
+      .focused()
+      .type('{alt}{enter}')
+      .should('have.value', '<h1>Hello</h1>\n');
+  });
+
+  it('Should ignore Ctrl+Enter', () => {
+    cy.visit(
+      'learn/responsive-web-design/basic-html-and-html5/say-hello-to-html-elements'
+    );
+    cy.get(selectors.editor, { timeout: 15000 })
+      .first()
+      .click()
+      .focused()
+      .type('{ctrl}{enter}')
+      .should('have.value', '<h1>Hello</h1>');
+  });
+});