js: Set BoxLayout orientation

Use new `orientation` property instead of `vertical`.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3614>

js/ui/appDisplay.js

@@ -610,7 +610,7 @@ var BaseAppView = GObject.registerClass({
         scrollContainer._delegate = this;
 
         this._box = new St.BoxLayout({
-            vertical: true,
+            orientation: Clutter.Orientation.VERTICAL,
             x_expand: true,
             y_expand: true,
         });
@@ -2527,7 +2527,7 @@ export const AppFolderDialog = GObject.registerClass({
             y_expand: true,
             x_align: Clutter.ActorAlign.CENTER,
             y_align: Clutter.ActorAlign.CENTER,
-            vertical: true,
+            orientation: Clutter.Orientation.VERTICAL,
         });
 
         this.child = new St.Bin({