Users: Pass WP_User object to wp_set_password action in during new user creation.

After [60634], `wp_set_password` is now fired during new user creation and existing user updates when a password is changed.  `wp_set_password` expects the third argument to be a `WP_User` object of the user's data prior to the update.  This change simply passes the newly created `WP_User` object.

Follow-up to [60634].

Props dd32.
See #22114.

git-svn-id: https://develop.svn.wordpress.org/trunk@60712 602fd350-edb4-49c9-b593-d223f7449a82

Author: dream-encode

src/wp-includes/user.php

@@ -2515,7 +2515,7 @@ function wp_insert_user( $userdata ) {
 
 	if ( ! $update ) {
 		/** This action is documented in wp-includes/pluggable.php */
-		do_action( 'wp_set_password', $userdata['user_pass'], $user_id, $userdata );
+		do_action( 'wp_set_password', $userdata['user_pass'], $user_id, $user );
 	}
 
 	/**