Posts, Post Types: Enable revisions for the `wp_block` post type.

This allows site owners to take advantage of revisions while broader improvements to block management and reusable blocks are explored.

Props matveb, audrasjb, desrosj.
Fixes #53072.
Built from https://develop.svn.wordpress.org/trunk@50835


git-svn-id: http://core.svn.wordpress.org/trunk@50444 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/post.php

@@ -305,6 +305,7 @@ function create_initial_post_types() {
 			'supports'              => array(
 				'title',
 				'editor',
+				'revisions',
 			),
 		)
 	);

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.8-alpha-50834';
+$wp_version = '5.8-alpha-50835';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.