Media: Prevent Media Library sidebar from showing with no actions.

Fix an issue where the actions sidebar in the media library could appear when there are no relevant actions available.

Props sruthi89, nithi22, ivanzhuck, dhruvishah2203, joemcgill, ukdrahul, joedolson, shailu25.
Fixes #58973.
Built from https://develop.svn.wordpress.org/trunk@57688


git-svn-id: http://core.svn.wordpress.org/trunk@57189 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/media-views.js

@@ -2282,9 +2282,12 @@ var State = Backbone.Model.extend(/** @lends wp.media.controller.State.prototype
 	_menu: function() {
 		var menu = this.frame.menu,
 			mode = this.get('menu'),
+			actionMenuItems = this.frame.menu.get('views'),
+			actionMenuLength = actionMenuItems ? actionMenuItems.views.get().length : 0,
 			view;
 
-		this.frame.$el.toggleClass( 'hide-menu', ! mode );
+		// Show action menu only if it is active and has more than one default element.
+		this.frame.$el.toggleClass( 'hide-menu', ! mode || actionMenuLength < 2 );
 		if ( ! mode ) {
 			return;
 		}

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.5-beta2-57687';
+$wp_version = '6.5-beta2-57688';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.