fix image fallback bug

src/shared/composer/user.tsx

@@ -9,10 +9,10 @@ export function User({ pubkey }: { pubkey: string }) {
 		<div className="flex items-center gap-2">
 			<div className="h-8 w-8 shrink-0 overflow-hidden rounded bg-zinc-900">
 				<Image
-					src={user?.image || DEFAULT_AVATAR}
+					src={user?.image}
+					fallback={DEFAULT_AVATAR}
 					alt={pubkey}
 					className="h-8 w-8 object-cover"
-					loading="auto"
 				/>
 			</div>
 			<h5 className="text-base font-semibold leading-none text-zinc-100">