WordPress dashboard sort posts by date

Here is what I need: To have any post type sorted in WordPress dashboard by DATE in the DESCENDING order. Here is the code that will enable this for all post types.

add_action( 'pre_get_posts', 'custom_sort_and_postcount' );
function custom_sort_and_postcount( $query ){
	global $wp_the_query;
	if ( $wp_the_query === $query ) {
		$query->set( 'posts_per_page', 999 );
		if('menu_order title' == get_query_var('orderby')){
		$query->set( 'orderby', 'date' );
		$query->set( 'order', 'desc' );
		}
	}
	return $query;
};

As you can see I have set 999 posts per page, and all the settings in the WP dashboard will be ignored because of this line

$query->set('posts_per_page', 999 );

In other words the following two URL’s will return the same output:

• https://site.com/wp-admin/edit.php?post_type=articles
• https://site.com/wp-admin/edit.php?post_type=articles&orderby=date&order=desc