Merge commit '520974e05211e988b0447f7f29e88798b1794bcf' into glitch-soc/merge-upstream

Conflicts:
- `app/serializers/rest/status_serializer.rb`:
  Not a real conflict, just glitch-soc code textually adjacent to code added
  upstream.

app/lib/activitypub/parser/status_parser.rb

@@ -125,6 +125,10 @@ class ActivityPub::Parser::StatusParser
     end.first
   end
 
+  def legacy_quote?
+    !@object.key?('quote')
+  end
+
   # The inlined quote; out of the attributes we support, only `https://w3id.org/fep/044f#quote` explicitly supports inlined objects
   def quoted_object
     as_array(@object['quote']).first