REST API: Always return post types list in taxonomies endpoint response as an array.

Prevents a non-sequential post type array such as [ 0 => 'post', 2 => 'page' ] from being improperly converted to an object in the taxonomy endpoint's response JSON.

Props TimothyBlynJacobs, birgire, spectacula.
Fixes #42209.

Built from https://develop.svn.wordpress.org/trunk@45813


git-svn-id: http://core.svn.wordpress.org/trunk@45624 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rest-api/endpoints/class-wp-rest-taxonomies-controller.php

@@ -210,7 +210,7 @@ class WP_REST_Taxonomies_Controller extends WP_REST_Controller {
 		}
 
 		if ( in_array( 'types', $fields, true ) ) {
-			$data['types'] = $taxonomy->object_type;
+			$data['types'] = array_values( $taxonomy->object_type );
 		}
 
 		if ( in_array( 'show_cloud', $fields, true ) ) {

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45812';
+$wp_version = '5.3-alpha-45813';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.