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

…ction

The options parameter in the next() function is now marked as optional using
TypeScript's optional parameter syntax, providing better flexibility when
calling the function without options.

packages/unplugin-typia/src/next.ts

@@ -30,7 +30,7 @@ import type { Options } from './core/options.js';
  * );
  * ```
  */
-function next(nextConfig: NextConfig = {}, options: Options): NextConfig {
+function next(nextConfig: NextConfig = {}, options?: Options): NextConfig {
 	return {
 		...nextConfig,
 		webpack(config: Record<string, unknown>, webpackOptions: WebpackConfigContext) {