Editor: Remove standard post type UI for templates and template parts.

In [52158] the standard post type UI was added back for templates and template parts, because these features had been temporarily removed from the site editor in the rush to get 5.9 ready for December. Since 5.9 these features were properly added back to the site editor, the `show_ui` values for these post types should be returned back to `false`.

Follow-up to [52158].

Props manfcarlo, audrasjb.
Fixes #54908.

Built from https://develop.svn.wordpress.org/trunk@52668


git-svn-id: http://core.svn.wordpress.org/trunk@52257 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/post.php

@@ -356,7 +356,7 @@ function create_initial_post_types() {
 			'public'                => false,
 			'_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 			'has_archive'           => false,
-			'show_ui'               => wp_is_block_theme(),
+			'show_ui'               => false,
 			'show_in_menu'          => false,
 			'show_in_rest'          => true,
 			'rewrite'               => false,
@@ -416,7 +416,7 @@ function create_initial_post_types() {
 			'public'                => false,
 			'_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 			'has_archive'           => false,
-			'show_ui'               => wp_is_block_theme(),
+			'show_ui'               => false,
 			'show_in_menu'          => false,
 			'show_in_rest'          => true,
 			'rewrite'               => false,

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-alpha-52664';
+$wp_version = '6.0-alpha-52668';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.