chore: fix user banner dropdown

web/src/components/MemoView.tsx

@@ -95,7 +95,7 @@ const MemoView: React.FC<Props> = (props: Props) => {
       )}
       ref={memoContainerRef}
     >
-      <div className="w-full flex flex-row justify-between items-center mb-1">
+      <div className="w-full h-7 flex flex-row justify-between items-center mb-1">
         <div className="w-auto flex flex-row justify-start items-center mr-1">
           {props.showCreator && creator && (
             <>

web/src/components/UserBanner.tsx

@@ -28,7 +28,7 @@ const UserBanner = (props: Props) => {
   return (
     <div className="relative w-auto h-auto px-1 shrink-0">
       <Dropdown>
-        <MenuButton slots={{ root: "div" }}>
+        <MenuButton disabled={!user} slots={{ root: "div" }}>
           <div
             className={classNames(
               "py-1 my-1 w-auto flex flex-row justify-start items-center cursor-pointer rounded-2xl border border-transparent text-gray-800 dark:text-gray-300",