fix invalid input minecraft uuid search

src/util/minecraft.ts

@@ -2,7 +2,7 @@ export async function getJavaUuid(username: string) {
   const response = await fetch(`https://api.mojang.com/users/profiles/minecraft/${username}`);
   if (!response.ok) {
     // user doesn't exist
-    if (response.status == 404) throw new Error();
+    if (response.status == 400 || response.status == 404) throw new Error();
     // rate limit
     else if (response.status == 429) return null;
     return null;