better UX when deleting notes - focus in note tree is moved to the next/previous note

src/public/app/widgets/tab_row.js

@@ -614,6 +614,7 @@ export default class TabRowWidget extends BasicWidget {
 
         if (!note) {
             this.updateTitle($tab, 'New tab');
+            return;
         }
 
         this.updateTitle($tab, note.title);