#1699 Allow images to work with Hyperlink

Add stack to IContext for prepForXml

src/export/formatter.ts

@@ -2,7 +2,7 @@ import { BaseXmlComponent, IContext, IXmlableObject } from "@file/xml-components
 
 export class Formatter {
     // tslint:disable-next-line: no-object-literal-type-assertion
-    public format(input: BaseXmlComponent, context: IContext = {} as IContext): IXmlableObject {
+    public format(input: BaseXmlComponent, context: IContext = { stack: [] } as unknown as IContext): IXmlableObject {
         const output = input.prepForXml(context);
 
         if (output) {