[Embeds] stop adding tracking params to non-bsky.app links (#4167)

* don't add tracking params on non-bsky.app links

* validate facets

bskyembed/src/components/link.tsx

@@ -3,10 +3,12 @@ import {h} from 'preact'
 export function Link({
   href,
   className,
+  disableTracking,
   ...props
 }: {
   href: string
   className?: string
+  disableTracking?: boolean
 } & h.JSX.HTMLAttributes<HTMLAnchorElement>) {
   const searchParam = new URLSearchParams(window.location.search)
   const ref_url = searchParam.get('ref_url')
@@ -19,9 +21,9 @@ export function Link({
 
   return (
     <a
-      href={`${
-        href.startsWith('http') ? href : `https://bsky.app${href}`
-      }?${newSearchParam.toString()}`}
+      href={`${href.startsWith('http') ? href : `https://bsky.app${href}`}${
+        disableTracking ? '' : `?${newSearchParam.toString()}`
+      }`}
       target="_blank"
       rel="noopener noreferrer nofollow"
       onClick={evt => evt.stopPropagation()}