show avatar dialog instead of default (#4033)

show avatar dialog instead of default

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

web/src/components/message-item/index.tsx

@@ -30,6 +30,7 @@ interface IProps extends Partial<IRemoveMessageById>, IRegenerateMessage {
   sendLoading?: boolean;
   nickname?: string;
   avatar?: string;
+  avatardialog?: string | null;
   clickDocumentButton?: (documentId: string, chunk: IReferenceChunk) => void;
   index: number;
   showLikeButton?: boolean;
@@ -40,6 +41,7 @@ const MessageItem = ({
   reference,
   loading = false,
   avatar,
+  avatardialog,
   sendLoading = false,
   clickDocumentButton,
   index,
@@ -103,8 +105,10 @@ const MessageItem = ({
         >
           {item.role === MessageType.User ? (
             <Avatar size={40} src={avatar ?? '/logo.svg'} />
+          ) : avatardialog ? (
+            <Avatar size={40} src={avatardialog} />
           ) : (
-            <AssistantIcon></AssistantIcon>
+            <AssistantIcon />
           )}
           <Flex vertical gap={8} flex={1}>
             <Space>