skip flaky tests (#31110)

e2e-tests/cypress/tests/integration/channels/collapsed_reply_threads/unread_spec.ts

@@ -7,7 +7,6 @@
 // - Use element ID when selecting an element. Create one if none.
 // ***************************************************************
 
-// Stage: @prod
 // Group: @channels @collapsed_reply_threads
 
 import {Channel} from '@mattermost/types/channels';
@@ -97,7 +96,7 @@ describe('Collapsed Reply Threads', () => {
         });
     });
 
-    it('MM-T5671 should handle mention counts correctly when marking a thread as unread and unfollowing it', () => {
+    it.skip('MM-T5671 should handle mention counts correctly when marking a thread as unread and unfollowing it', () => {
         // # Post a root post as current user
         cy.postMessageAs({
             sender: otherUser,