Allow forms in iframes

Author: bfollington

typescript/packages/lookslike-high-level/src/components/iframe-view.ts

@@ -87,7 +87,7 @@ export class CommonIframe extends LitElement {
     return html`
       <iframe
         ${ref(this.iframeRef)}
-        sandbox="allow-scripts"
+        sandbox="allow-scripts allow-forms"
         .srcdoc=${this.src}
         height="512px"
         width="100%"