refactor: port useIsomorphicEffect to typescript (#18888)

Author: adamalston

packages/react/src/internal/useIsomorphicEffect.js

@@ -0,0 +1,14 @@
+/**
+ * Copyright IBM Corp. 2021, 2025
+ *
+ * This source code is licensed under the Apache-2.0 license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import { useEffect, useLayoutEffect } from 'react';
+
+/** `useLayoutEffect` on the client, `useEffect` on the server */
+const useIsomorphicEffect =
+  typeof window !== 'undefined' ? useLayoutEffect : useEffect;
+
+export default useIsomorphicEffect;