fix(mobile): vertical layout not sized properly

src/public/app/widgets/containers/root_container.js

@@ -1,8 +1,8 @@
 import FlexContainer from "./flex_container.js";
 
 export default class RootContainer extends FlexContainer {
-    constructor() {
-        super('column');
+    constructor(isHorizontalLayout) {
+        super(isHorizontalLayout ? "column" : "row");
 
         this.id('root-widget');
         this.css('height', '100%');