Fix #1764 (#1765)

Author: pfefferle

.github/changelog/1765-from-description

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fixed
+
+Default number of attachments now works correctly in block editor.

includes/class-options.php

@@ -137,7 +137,8 @@ public static function maybe_disable_interactions( $pre ) {
 	 * Default max image attachments.
 	 *
 	 * @param string $value The value of the option.
-	 * @return string|int
+	 *
+	 * @return string|int The value of the option.
 	 */
 	public static function default_max_image_attachments( $value ) {
 		if ( ! \is_numeric( $value ) ) {

includes/wp-admin/class-settings-fields.php

@@ -83,16 +83,14 @@ public static function register_settings_fields() {
 			);
 		}
 
-		if ( ! site_supports_blocks() || \is_plugin_active( 'classic-editor/classic-editor.php' ) ) {
-			add_settings_field(
-				'activitypub_max_image_attachments',
-				__( 'Media attachments', 'activitypub' ),
-				array( self::class, 'render_max_image_attachments_field' ),
-				'activitypub_settings',
-				'activitypub_activities',
-				array( 'label_for' => 'activitypub_max_image_attachments' )
-			);
-		}
+		add_settings_field(
+			'activitypub_max_image_attachments',
+			__( 'Media attachments', 'activitypub' ),
+			array( self::class, 'render_max_image_attachments_field' ),
+			'activitypub_settings',
+			'activitypub_activities',
+			array( 'label_for' => 'activitypub_max_image_attachments' )
+		);
 
 		add_settings_field(
 			'activitypub_support_post_types',