If no widget present in Astra Theme, remove the sidebar for WooCommerce archive pages. ( Shop, Product Taxonomy, Checkout, Cart, Account Page ) - Add this code in child theem.

functions.php

add_action( 'wp', 'astra_woo_sidebar_layout' );

function astra_woo_sidebar_layout() {
	if ( is_shop() || is_product_taxonomy() || is_checkout() || is_cart() || is_account_page() ) {
		add_filter( 'astra_page_layout', 'astra_page_layout_woo_no_sidebar', 100 );
	}
}

function astra_page_layout_woo_no_sidebar( $sidebar_layout ) {

	$sidebar = apply_filters( 'astra_get_sidebar', 'sidebar-1' );

	$all_sidebars = wp_get_sidebars_widgets();

	foreach ($all_sidebars as $id => $sidebar ) {
		if( count( $sidebar ) === 0 && 'astra-woo-shop-sidebar' === $id ) {
			// Enable no sidebar layout.
			$sidebar_layout = 'no-sidebar';
		}
	}
    return $sidebar_layout;
}