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

Props aduth.
Fixes #46597.



git-svn-id: https://develop.svn.wordpress.org/trunk@45242 602fd350-edb4-49c9-b593-d223f7449a82

src/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',
 		)
 	);