Fix codesandbox colors

Author: Ives van Hoorne

packages/app/src/app/pages/Sandbox/Editor/utils/get-vscode-theme.js

@@ -70,7 +70,7 @@ export default async function getTheme(themeName, customTheme) {
   const theme = {
     ...currentTheme,
     colors: {
-      ...(isLight ? vs : vsDark),
+      ...(themeName === 'codesandbox' ? {} : isLight ? vs : vsDark),
       ...currentTheme.colors,
     },
   };