added tooltip to avatars without avatar

src/utils.js

@@ -984,6 +984,14 @@ export function MyAvatar({
   userId,
 }) {
   const MyDefaultAvatar = () => {
+    if (tooltip) {
+      return (
+        <Tooltip placement="top" trigger="hover" title={tooltipTitle}>
+          <Avatar size={avatarWidth} icon={<UserOutlined />} />
+        </Tooltip>
+      );
+    }
+
     return <Avatar size={avatarWidth} icon={<UserOutlined />} />;
   };