Site Editor: Render the template descriptions properly.

The initializaion of the editor was a bit different between Gutenberg and Core.
This brings them in sync which solves the missing descriptions from the template header
in the site editor.

See #54337.

Built from https://develop.svn.wordpress.org/trunk@52336


git-svn-id: http://core.svn.wordpress.org/trunk@51928 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/site-editor.php

@@ -37,12 +37,18 @@ add_filter(
 	}
 );
 
+$indexed_template_types = array();
+foreach ( get_default_block_template_types() as $slug => $template_type ) {
+	$template_type['slug']    = (string) $slug;
+	$indexed_template_types[] = $template_type;
+}
+
 $block_editor_context = new WP_Block_Editor_Context();
 $custom_settings      = array(
 	'siteUrl'                              => site_url(),
 	'postsPerPage'                         => get_option( 'posts_per_page' ),
 	'styles'                               => get_block_editor_theme_styles(),
-	'defaultTemplateTypes'                 => get_default_block_template_types(),
+	'defaultTemplateTypes'                 => $indexed_template_types,
 	'defaultTemplatePartAreas'             => get_allowed_block_template_part_areas(),
 	'__experimentalBlockPatterns'          => WP_Block_Patterns_Registry::get_instance()->get_all_registered(),
 	'__experimentalBlockPatternCategories' => WP_Block_Pattern_Categories_Registry::get_instance()->get_all_registered(),

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-beta1-52335';
+$wp_version = '5.9-beta1-52336';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.