fix(blacklist): request data only when modal is shown, remove useless ratelimit and lazy load blacklist (#1084)

* perf: remove eager load of Blacklist entity from Media entity

Try to resolve some performance issues by removing the eager loading of Blacklist items from the
Media entity

* fix: fix ManageSlideOver for blacklist

* 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.

* perf(blacklist): remove useless ratelimit

server/entity/Blacklist.ts

@@ -80,12 +80,12 @@ export class Blacklist implements BlacklistItem {
         status: MediaStatus.BLACKLISTED,
         status4k: MediaStatus.BLACKLISTED,
         mediaType: blacklistRequest.mediaType,
-        blacklist: blacklist,
+        blacklist: Promise.resolve(blacklist),
       });
 
       await mediaRepository.save(media);
     } else {
-      media.blacklist = blacklist;
+      media.blacklist = Promise.resolve(blacklist);
       media.status = MediaStatus.BLACKLISTED;
       media.status4k = MediaStatus.BLACKLISTED;