fix(core): Pass origin as referrer for lazyLoadIntegration (#12766)

In our case the referrer is not passed
to the feedback script and thus results in a 403 (because we set allowed
domains in our project settings). Consequently also the modal doesn't
open and it's a bit disappointing for us since we would like to use the
feature.

packages/browser/src/utils/lazyLoadIntegration.ts

@@ -51,6 +51,7 @@ export async function lazyLoadIntegration(name: keyof typeof LazyLoadableIntegra
   const script = WINDOW.document.createElement('script');
   script.src = url;
   script.crossOrigin = 'anonymous';
+  script.referrerPolicy = 'origin';
 
   const waitForLoad = new Promise<void>((resolve, reject) => {
     script.addEventListener('load', () => resolve());