[MM-63023] Conditionally make thread item elements focusable based on whether they have an interaction (#30592)

* [MM-63023] Conditionally make thread item elements focusable based on whether they have an interaction

* Fix i18n & PR feedback

* Remove focusability from the text preview div

* Fix tests

e2e-tests/cypress/tests/integration/channels/keyboard_shortcuts/ctrl_cmd_k_open_channel_from_global_threads_spec.js

@@ -78,7 +78,7 @@ describe('Keyboard Shortcuts', () => {
             cy.uiClickSidebarItem('threads');
 
             // * There should be a thread there
-            cy.get('article.ThreadItem').should('have.have.lengthOf', 2);
+            cy.get('div.ThreadItem').should('have.have.lengthOf', 2);
         });
 
         // # Press CTRL/CMD+K