Revert "fix: userMeta设置backgroundColor 不生效的问题 (#295)"

This reverts commit 4a0b820.

src/ProChat/store/selectors/chat.ts

@@ -13,13 +13,11 @@ export const currentChats = (s: ChatStore): ChatMessage[] => {
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const { avatar, title, backgroundColor, ...rest } = s.userMeta;
     const assistant = s.assistantMeta;
-    const user = s.userMeta;
     switch (message?.role) {
       case 'user': {
         return {
           avatar,
           title,
-          backgroundColor: user?.backgroundColor,
           ...rest,
         };
       }