Issue when GET method is set

Hello.

I have noticed that there is small issue when the plugin is set to use ‘get’ method. It ignores selected filters. In order to sort this out I have made a small fix and added it to my theme functions. Maybe this will be helpful for someone. This is fast fix, possibly can be optimized.

add_action('wppp_before_dropdown', 'woocommerce_products_per_page_dropdown_get_fix', 10);
function woocommerce_products_per_page_dropdown_get_fix(){
	$method = in_array( get_option( 'wppp_method', 'post' ), array( 'post', 'get' ) ) ? get_option( 'wppp_method', 'post' ) : 'post';

	if($method === 'get'){
		$filters = $_GET;
		if(isset($filters) && !empty($filters)){
			foreach($filters as $key => $value){
				if(substr($key, 0, 6) === 'filter') {
					echo '<input type="hidden" name="'.$key.'" value="'.$value.'">';
				}
			}
		}
	}

}

https://ww.wp.xz.cn/plugins/woocommerce-products-per-page/