perf(blacklist): request data only when modal is shown

For admin users, the button to blacklist a media (used on every media card) was displaying a Modal,
that was requesting data BEFORE the modal was displayed. This resulted in dozens of additional
requests everytime media cards were displayed.

src/components/BlacklistModal/index.tsx

@@ -38,7 +38,7 @@ const BlacklistModal = ({
   const intl = useIntl();
 
   const { data, error } = useSWR<TvDetails | MovieDetails>(
-    `/api/v1/${type}/${tmdbId}`
+    show ? `/api/v1/${type}/${tmdbId}` : null
   );
 
   return (