Add missing `@access` tags to two DocBlocks in `WP_Customize_Setting`.

See [31707]. See #31888.


git-svn-id: https://develop.svn.wordpress.org/trunk@32034 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-customize-setting.php

@@ -118,6 +118,7 @@ class WP_Customize_Setting {
 	 * The ID for the current blog when the preview() method was called.
 	 *
 	 * @since 4.2.0
+	 * @access protected
 	 * @var int
 	 */
 	protected $_previewed_blog_id;
@@ -126,6 +127,8 @@ class WP_Customize_Setting {
 	 * Return true if the current blog is not the same as the previewed blog.
 	 *
 	 * @since 4.2.0
+	 * @access public
+	 *
 	 * @return bool|null Returns null if preview() has not been called yet.
 	 */
 	public function is_current_blog_previewed() {