KSES: Add `background-position` and `grid-template-columns` as safe CSS properties.

Props aduth.
Fixes #46597.


Built from https://develop.svn.wordpress.org/trunk@45242


git-svn-id: http://core.svn.wordpress.org/trunk@45051 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/kses.php

@@ -2062,6 +2062,7 @@ function safecss_filter_attr( $css, $deprecated = '' ) {
 	 * @since 4.6.0 Added support for `list-style-type`.
 	 * @since 5.0.0 Added support for `background-image`.
 	 * @since 5.1.0 Added support for `text-transform`.
+	 * @since 5.2.0 Added support for `background-position` and `grid-template-columns`
 	 *
 	 * @param string[] $attr Array of allowed CSS attributes.
 	 */
@@ -2071,6 +2072,7 @@ function safecss_filter_attr( $css, $deprecated = '' ) {
 			'background',
 			'background-color',
 			'background-image',
+			'background-position',
 
 			'border',
 			'border-width',
@@ -2138,6 +2140,7 @@ function safecss_filter_attr( $css, $deprecated = '' ) {
 			'overflow',
 			'vertical-align',
 			'list-style-type',
+			'grid-template-columns',
 		)
 	);
 

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2-beta3-45241';
+$wp_version = '5.2-beta3-45242';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.