fix: 解决会话列表按最新操作时间倒序排序，当前会话判断失败的bug

Author: 李超

app/store/chat.ts

@@ -345,7 +345,7 @@ export const useChatStore = createPersistStore(
             new Date(b.lastUpdate).getTime() - new Date(a.lastUpdate).getTime(),
         );
         const currentSessionIndex = sessions.findIndex((session) => {
-          return session && currentSession && session.id === session.id;
+          return session && currentSession && session.id === currentSession.id;
         });
 
         set((state) => ({

app/utils/sync.ts

@@ -150,7 +150,7 @@ const MergeStates: StateMerger = {
 
     localState.currentSessionIndex = localState.sessions.findIndex(
       (session) => {
-        return session && currentSession && session.id === session.id;
+        return session && currentSession && session.id === currentSession.id;
       },
     );