Refactor the way we check for if widget or not to make it easier to mock

src/widget.ts

@@ -181,3 +181,10 @@ export const widget = ((): WidgetHelpers | null => {
     return null;
   }
 })();
+
+/**
+ * Whether or not we are running as a widget.
+ * 
+ * @returns true if widget, false if SPA
+ */
+export const isRunningAsWidget: boolean = !!widget;