Add a value to the password checkbox when creating a new user so the toggle is remembered.

props chriseverson, SergeyBiryukov.
fixes #27006.

Built from https://develop.svn.wordpress.org/trunk@27838


git-svn-id: http://core.svn.wordpress.org/trunk@27672 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/user-new.php

@@ -400,7 +400,7 @@ if ( apply_filters( 'show_password_fields', true ) ) : ?>
 	</tr>
 	<tr>
 		<th scope="row"><label for="send_password"><?php _e('Send Password?') ?></label></th>
-		<td><label for="send_password"><input type="checkbox" name="send_password" id="send_password" <?php checked( $new_user_send_password ); ?> /> <?php _e('Send this password to the new user by email.'); ?></label></td>
+		<td><label for="send_password"><input type="checkbox" name="send_password" id="send_password" value="1" <?php checked( $new_user_send_password ); ?> /> <?php _e('Send this password to the new user by email.'); ?></label></td>
 	</tr>
 <?php endif; ?>
 <?php } // !is_multisite ?>