Fix Cypress tests on master (#26500)

e2e-tests/cypress/tests/integration/channels/emoji/custom_emoji_2_spec.ts

@@ -120,7 +120,9 @@ describe('Custom emojis', () => {
 
         cy.get('#emojiPicker').should('be.visible').within(() => {
             // # Scroll to start of custom category section
-            cy.findByLabelText('emoji_picker.custom').should('exist').click().wait(TIMEOUTS.FIVE_SEC);
+            cy.get('i.icon-emoticon-custom-outline').as('customSection');
+            cy.get('@customSection').click().wait(TIMEOUTS.FIVE_SEC);
+            cy.get('@customSection').click().wait(TIMEOUTS.FIVE_SEC);
 
             // * Verify custom category header is visible
             cy.findByText('Custom').should('exist').and('is.visible');

e2e-tests/cypress/tests/integration/channels/emoji/custom_emoji_3_spec.ts

@@ -110,6 +110,7 @@ describe('Custom emojis', () => {
             // * Select the custom emoji
             cy.findAllByTestId('emojiItem').children().click();
         });
+        cy.uiGetPostTextBox().type('+' + builtinEmojiWithColons).wait(TIMEOUTS.HALF_SEC).type('{enter}').type('{enter}');
 
         cy.getLastPostId().then((postId) => {
             cy.get(`#postReaction-${postId}-` + builtinEmoji).should('be.visible');