Don't require publish_post when manually adding cap

includes/class-admin.php

@@ -27,7 +27,6 @@ public static function init() {
 		\add_action( 'load-comment.php', array( self::class, 'edit_comment' ) );
 		\add_action( 'load-post.php', array( self::class, 'edit_post' ) );
 		\add_action( 'load-edit.php', array( self::class, 'list_posts' ) );
-		\add_action( 'load-users.php', array( self::class, 'user_errors' ) );
 		\add_filter( 'page_row_actions', array( self::class, 'row_actions' ), 10, 2 );
 		\add_filter( 'post_row_actions', array( self::class, 'row_actions' ), 10, 2 );
 		\add_action( 'personal_options_update', array( self::class, 'save_user_settings' ) );
@@ -783,11 +782,7 @@ public static function handle_bulk_request( $sendback, $action, $users ) {
 		foreach ( $users as $user_id ) {
 			$user = new \WP_User( $user_id );
 			if ( 'add_activitypub_cap' === $action ) {
-				if ( \user_can( $user_id, 'publish_posts' ) ) {
-					$user->add_cap( 'activitypub' );
-				} else {
-					$sendback = \add_query_arg( 'update', 'activitypub_cap_error', $sendback );
-				}
+				$user->add_cap( 'activitypub' );
 			} elseif ( 'remove_activitypub_cap' === $action ) {
 				$user->remove_cap( 'activitypub' );
 			}
@@ -796,26 +791,6 @@ public static function handle_bulk_request( $sendback, $action, $users ) {
 		return $sendback;
 	}
 
-	/**
-	 * Display an error message if the user has no publish_posts capability.
-	 */
-	public static function user_errors() {
-		if ( ! isset( $_GET['update'] ) || 'activitypub_cap_error' !== $_GET['update'] ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
-			return;
-		}
-
-		// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
-		$GLOBALS['errors'] = new \WP_Error( 'activitypub_cap_error', esc_html__( 'The user has to be able to publish posts to use ActivityPub.', 'activitypub' ) );
-
-		add_filter(
-			'wp_admin_notice_args',
-			function ( $args ) {
-				$args['paragraph_wrap'] = false;
-				return $args;
-			}
-		);
-	}
-
 	/**
 	 * Add ActivityPub infos to the dashboard glance items.
 	 *