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

node_modules/docx/dist/file/paragraph/math/n-ary/math-integral.d.ts

@@ -0,0 +1,10 @@
+import { XmlComponent } from '../../../xml-components';
+import { MathComponent } from '../math-component';
+export type IMathIntegralOptions = {
+    readonly children: readonly MathComponent[];
+    readonly subScript?: readonly MathComponent[];
+    readonly superScript?: readonly MathComponent[];
+};
+export declare class MathIntegral extends XmlComponent {
+    constructor(options: IMathIntegralOptions);
+}