Twenty Fifteen: Fixes List Block with padding not having background color.

The List Block when had padding was not displaying the background color correctly. This only impacts the non-framed editor.

Props viralsampat, devtanbir, sabernhardt, deepakvijayan.
Fixes #60197.

Built from https://develop.svn.wordpress.org/trunk@58772


git-svn-id: http://core.svn.wordpress.org/trunk@58174 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentyfifteen/css/editor-blocks.css

@@ -405,6 +405,10 @@ Description: Used to style blocks in the editor.
 	padding: 0;
 }
 
+div.editor-styles-wrapper .wp-block-list:where(.has-background) {
+	padding: 1.25em 2.375em;
+}
+
 /* Quote */
 
 .rtl .editor-block-list__block blockquote {

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-58771';
+$wp_version = '6.7-alpha-58772';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.