fix: sandbox same-origin requests in iframe

Author: KaelWD

src/output/Preview.vue

@@ -82,7 +82,6 @@ function createSandbox() {
       'allow-modals',
       'allow-pointer-lock',
       'allow-popups',
-      'allow-same-origin',
       'allow-scripts',
       'allow-top-navigation-by-user-activation',
     ].join(' ')