Update site-editor.php

Author: ellatrix

src/wp-admin/site-editor.php

@@ -182,6 +182,7 @@ static function ( $classes ) {
 	array( rest_get_route_for_post_type_items( 'attachment' ), 'OPTIONS' ),
 	array( rest_get_route_for_post_type_items( 'page' ), 'OPTIONS' ),
 	'/wp/v2/types?context=view',
+	'/wp/v2/_wp_static_template?context=edit',
 	'/wp/v2/types/wp_template?context=edit',
 	'/wp/v2/types/wp_template_part?context=edit',
 	'/wp/v2/templates?context=edit&per_page=-1',