fix(unplugin-typia/next): make options parameter optional

Makes the options parameter in next() function optional to allow more flexible
configuration when using the NextJS plugin without specific options.

packages/unplugin-typia/src/next.ts

@@ -28,7 +28,7 @@ import type { Options } from './core/options.js';
  * );
  * ```
  */
-function next(nextConfig: Record<string, unknown> = {}, options: Options): Record<string, unknown> {
+function next(nextConfig: Record<string, unknown> = {}, options?: Options): Record<string, unknown> {
 	return {
 		...nextConfig,
 		webpack(config: Record<string, unknown>, webpackOptions: Record<string, unknown>) {