feat(客服聊天): 添加获取当前选中客服用户的功能

在CkChatState接口中添加kfSelectedUser方法用于获取当前选中的客服用户信息，并在聊天窗口组件中显示该信息

Cunkebao/src/store/module/ckchat.data.ts

@@ -31,6 +31,7 @@ export interface CkChatState {
   chatSessions: any[];
   kfUserList: KfUserListData[];
   kfSelected: number;
+  kfSelectedUser: () => KfUserListData | undefined;
   newContractList: { groupName: string; contacts: any[] }[];
   asyncKfSelected: (data: number) => void;
   getkfUserList: () => KfUserListData[];

Cunkebao/src/store/module/ckchat.ts

@@ -16,6 +16,10 @@ export const useCkChatStore = createPersistStore<CkChatState>(
     kfUserList: [], //客服列表
     kfSelected: 0,
     newContractList: [], //联系人分组
+    kfSelectedUser: () => {
+      const state = useCkChatStore.getState();
+      return state.kfUserList.find(item => item.id === state.kfSelected);
+    },
     asyncKfSelected: (data: number) => {
       set({ kfSelected: data });
     },