Preserve BB loop meta_query when using events

gistfile1.txt

add_filter( 'fl_builder_loop_query_args', function( $args ) {
	global $bb_meta;
	$bb_meta = $args['meta_query'];
	return $args;
});

add_action( 'pre_get_posts', function( $query ) {
	if ( $query instanceof WP_Query && isset( $query->query['fl_builder_loop'] ) ) {
		global $bb_meta;
		$meta   = array();
		$meta[] = $query->get( 'meta_query' );
		$meta[] = $bb_meta;
		$query->set( 'meta_query', $meta );
	}
});