Docs: Add missing @since tags for WP_User_Request properties.

Correct type for `$email`, `$confirmed_timestamp`, and `$completed_timestamp` properties.

Props pbiron, garrett-eclipse.
Fixes #49675.
Built from https://develop.svn.wordpress.org/trunk@47494


git-svn-id: http://core.svn.wordpress.org/trunk@47269 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-user-request.php

@@ -10,6 +10,7 @@ final class WP_User_Request {
 	/**
 	 * Request ID.
 	 *
+	 * @since 4.9.6
 	 * @var int
 	 */
 	public $ID = 0;
@@ -17,6 +18,7 @@ final class WP_User_Request {
 	/**
 	 * User ID.
 	 *
+	 * @since 4.9.6
 	 * @var int
 	 */
 	public $user_id = 0;
@@ -24,13 +26,15 @@ final class WP_User_Request {
 	/**
 	 * User email.
 	 *
-	 * @var int
+	 * @since 4.9.6
+	 * @var string
 	 */
 	public $email = '';
 
 	/**
 	 * Action name.
 	 *
+	 * @since 4.9.6
 	 * @var string
 	 */
 	public $action_name = '';
@@ -38,6 +42,7 @@ final class WP_User_Request {
 	/**
 	 * Current status.
 	 *
+	 * @since 4.9.6
 	 * @var string
 	 */
 	public $status = '';
@@ -45,6 +50,7 @@ final class WP_User_Request {
 	/**
 	 * Timestamp this request was created.
 	 *
+	 * @since 4.9.6
 	 * @var int|null
 	 */
 	public $created_timestamp = null;
@@ -52,6 +58,7 @@ final class WP_User_Request {
 	/**
 	 * Timestamp this request was last modified.
 	 *
+	 * @since 4.9.6
 	 * @var int|null
 	 */
 	public $modified_timestamp = null;
@@ -59,20 +66,23 @@ final class WP_User_Request {
 	/**
 	 * Timestamp this request was confirmed.
 	 *
-	 * @var int
+	 * @since 4.9.6
+	 * @var int|null
 	 */
 	public $confirmed_timestamp = null;
 
 	/**
 	 * Timestamp this request was completed.
 	 *
-	 * @var int
+	 * @since 4.9.6
+	 * @var int|null
 	 */
 	public $completed_timestamp = null;
 
 	/**
 	 * Misc data assigned to this request.
 	 *
+	 * @since 4.9.6
 	 * @var array
 	 */
 	public $request_data = array();
@@ -80,6 +90,7 @@ final class WP_User_Request {
 	/**
 	 * Key used to confirm this request.
 	 *
+	 * @since 4.9.6
 	 * @var string
 	 */
 	public $confirm_key = '';