fix(scarf): guard crypto.randomUUID for non-secure contexts (#1360)

Co-authored-by: sentry[bot] <39604003+sentry[bot]@users.noreply.github.com>

Author: sentry[bot]

src/components/Scarf.tsx

@@ -28,7 +28,7 @@ export function Scarf({ id, path }: { id: string; path: string }) {
     lastVisit.current = visit
     setPixel({
       visit,
-      src: `https://static.scarf.sh/a.png?x-pxid=${encodeURIComponent(id)}&key=${crypto.randomUUID()}`,
+      src: `https://static.scarf.sh/a.png?x-pxid=${encodeURIComponent(id)}&key=${crypto?.randomUUID?.() ?? Math.random().toString(36).slice(2)}`,
     })
   }, [id, visit])