Meta Query Improvements

PPWP is overriding meta query used by any other plugins/theme. Can this be improved ?

if ( ! is_admin() && $query->is_main_query() ) {
	if ( $post && post_password_required( $post->ID ) ) {
		$meta_query = array(
			array(
				'key'     => PPW_Constants::GLOBAL_PASSWORDS,
				'compare' => 'NOT EXISTS',
			),
		);
		$query->set( 'meta_query', $meta_query );
	}
}


if ( defined( 'REST_REQUEST' ) && REST_REQUEST && isset( $query->query_vars['s'] ) ) {
	$meta_query = array(
		array(
			'key'     => PPW_Constants::GLOBAL_PASSWORDS,
			'compare' => 'NOT EXISTS',
		),
	);
	
	$query->set( 'meta_query', $meta_query );
}

An improved version could be:

if ( ! is_admin() && $query->is_main_query() ) {
	if ( $post && post_password_required( $post->ID ) ) {
		$meta_query = $query->get( 'meta_query', array() ); // Get existing meta queries
		$meta_query[] = array(
			'key'     => PPW_Constants::GLOBAL_PASSWORDS,
			'compare' => 'NOT EXISTS',
		);
		$query->set( 'meta_query', $meta_query ); // Merge and set meta queries
	}
}

if ( defined( 'REST_REQUEST' ) && REST_REQUEST && isset( $query->query_vars['s'] ) ) {
	$meta_query = $query->get( 'meta_query', array() ); // Get existing meta queries
	$meta_query[] = array(
		'key'     => PPW_Constants::GLOBAL_PASSWORDS,
		'compare' => 'NOT EXISTS',
	);
	$query->set( 'meta_query', $meta_query ); // Merge and set meta queries
}

This approach ensures that your meta queries are appended rather than overwriting any previously defined meta queries.

Thanks.