[core] Add a comment to explain useEnhancedEffect (mui#39035)

packages/mui-utils/src/useEnhancedEffect/useEnhancedEffect.ts

@@ -1,6 +1,13 @@
 'use client';
 import * as React from 'react';
 
+/**
+ * A version of `React.useLayoutEffect` that does not show a warning when server-side rendering.
+ * This is useful for effects that are only needed for client-side rendering but not for SSR.
+ *
+ * Before you use this hook, make sure to read https://gist.github.com/gaearon/e7d97cdf38a2907924ea12e4ebdf3c85
+ * and confirm it doesn't apply to your use-case.
+ */
 const useEnhancedEffect = typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect;
 
 export default useEnhancedEffect;