chore: enable compiler

Author: stipsan

examples/css-in-js/next-15/next.config.ts

@@ -1,7 +1,7 @@
 import type { NextConfig } from 'next';
 
 const config: NextConfig = {
-  // compiler: { styledComponents: true },
+  compiler: { styledComponents: true },
   env: { SC_DISABLE_SPEEDY: 'false' },
 };
 

examples/styled-components/next-app-router/src/app/registry.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useCallback, useState, useSyncExternalStore } from 'react';
+import { useState } from 'react';
 import { useServerInsertedHTML } from 'next/navigation';
 import { ServerStyleSheet, StyleSheetManager } from 'styled-components';