mobile: fix ts error

apps/mobile/app/screens/editor/tiptap/use-editor.ts

@@ -755,6 +755,8 @@ export const useEditor = (
             ? (data as ContentItem).noteId
             : data.id;
 
+        if (!useTabStore.getState().hasTabForNote(noteId)) return;
+
         const note = data.type === "note" ? data : await db.notes?.note(noteId);
         lock.current = true;
         // Handle this case where note was locked on another device and synced.

apps/mobile/app/screens/editor/tiptap/use-tab-store.ts

@@ -98,7 +98,7 @@ class TabSessionStorage {
 
   static get(id: string): TabSessionItem | null {
     if (!id) return null;
-    return TabSessionStorage.storage.getMap(id);
+    return TabSessionStorage.storage.getMap(id) || null;
   }
 
   static set(id: string, session: TabSessionItem): void {