wpt_variation_table_args.php

<?php
if( !function_exists( 'wpt_variation_table_args' ) ){
    
    /**
     * Args manipulation for variable product
     * 
     * @param array $args WPT default args array
     * @return array
     */
    function wpt_variation_table_args( $args ){

        $_ID = get_the_ID();
        if( empty( $_ID ) || ! is_product() ) return $args;
        $product_includes = [];
        $this_post_variable = new WC_Product_Variable( $_ID );
        $available_post_includes = $this_post_variable->get_children();

        if( isset( $available_post_includes ) && is_array($available_post_includes) && count( $available_post_includes ) > 0 ){
            foreach ($available_post_includes as $pperItem){
                $product_includes[$pperItem] = $pperItem;
            }
        }

        
        $args['post_type'] = array( 'product', 'product_variation' );
        $args['post__in'] = $product_includes;
        unset( $args['tax_query'] );
        // unset( $args['meta_query'] ); //stock kaj korchilona bole off korechi. notun somossay paile abar dekhote hobe: 8.0.8.1

        return $args;
    }
}