Give explicit names to MobX observer components (#1413)

* Consider observer(...) as components

* Add display names to MobX observers

* Temporarily suppress nested components

* Suppress new false positives for react/prop-types

src/view/com/notifications/FeedItem.tsx

@@ -52,7 +52,7 @@ interface Author {
   moderation: ProfileModeration
 }
 
-export const FeedItem = observer(function ({
+export const FeedItem = observer(function FeedItemImpl({
   item,
 }: {
   item: NotificationsFeedItemModel