[MM-61599]: Remove tabIndex from non-interactive elements (#29659)

e2e-tests/cypress/tests/integration/channels/messaging/message_reaction_gm_spec.js

@@ -63,11 +63,7 @@ describe('Emoji reactions to posts/messages in GM channels', () => {
             // * Verify that the Add Reaction button isn't visible
             cy.findByLabelText('Add a reaction').should('not.be.visible');
 
-            // # Focus on the post since we can't hover with Cypress
-            cy.get(`#post_${postId}`).focus().tab().tab();
-
-            // * Verify that the Add Reaction button is now visible
-            cy.findByLabelText('Add a reaction').should('be.visible');
+            cy.get(`#post_${postId}`).trigger('mouseover');
 
             // # Click somewhere to clear the focus
             cy.get('#channelIntro').click();