Media: Render attachment custom fields for new uploads.

Initialize attachment custom fields during the add callback, so that fields are present as soon as an attachment is uploaded but do not refresh when field values are changed. Follow up to #40909.

Props trepmal, adamsilverstein, joedolson.
Merges [55649] to the 6.2 branch.
Fixes #58051.

Built from https://develop.svn.wordpress.org/branches/6.2@55735


git-svn-id: http://core.svn.wordpress.org/branches/6.2@55247 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/media-views.js

@@ -2464,6 +2464,11 @@ AttachmentCompat = View.extend(/** @lends wp.media.view.AttachmentCompat.prototy
 		'change textarea': 'save'
 	},
 
+	initialize: function() {
+		// Render the view when a new item is added.
+		this.listenTo( this.model, 'add', this.render );
+	},
+
 	/**
 	 * @return {wp.media.view.AttachmentCompat} Returns itself to allow chaining.
 	 */

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2.1-alpha-55731';
+$wp_version = '6.2.1-alpha-55735';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.