Fix App.jsx two-page workflow JSX render and update study app layout

node_modules/docx/dist/file/drawing/extent/extent.d.ts

@@ -0,0 +1,7 @@
+import { XmlComponent } from '../../xml-components';
+type ExtentAttributes = {
+    readonly x?: number;
+    readonly y?: number;
+};
+export declare const createExtent: ({ x, y }: ExtentAttributes) => XmlComponent;
+export {};