fix: bg on select dropdown (#1117)

### PR Checklist

- [x] The PR title follows
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- [x] Does the PR have changes to the frontend? If so, include
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      recording of the changes.
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<details>
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</details>

<details>
<summary>After (Click to open)</summary>


![image](https://github.com/user-attachments/assets/e37152e9-a697-49da-8471-1ab34d41297f)


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Author: TanishqSingla

frontend/islands/new.tsx

@@ -122,7 +122,7 @@ export function ScopeSelect(
   return (
     <>
       <select
-        class="w-full mt-4 block py-2 px-4 input-container input select"
+        class="w-full mt-4 block py-2 px-4 input-container input select dark:bg-jsr-gray-900"
         onChange={(e) => scope.value = e.currentTarget.value}
         value={scope}
         disabled={locked}