status: support either _misskey_quote or quoteUrl for fetching quotes

app/lib/activitypub/activity/create.rb

@@ -126,7 +126,7 @@ def process_status_params
         conversation: conversation_from_uri(@object['conversation']),
         media_attachment_ids: process_attachments.take(4).map(&:id),
         poll: process_poll,
-        quote: quote_from_url(@object['quoteUrl']),
+        quote: process_quote,
       }
     end
   end
@@ -428,10 +428,23 @@ def increment_voters_count!
     retry
   end
 
-  def quote_from_url(url)
+  def guess_quote_url
+    if @object["quoteUrl"] && !@object["quoteUrl"].empty?
+      @object["quoteUrl"]
+    elsif @object["_misskey_quote"] && !@object["_misskey_quote"].empty?
+      @object["_misskey_quote"]
+    else
+      nil
+    end
+  end
+
+  def process_quote
+    url = guess_quote_url
     return nil if url.nil?
 
     quote = ResolveURLService.new.call(url)
     status_from_uri(quote.uri) if quote
+  rescue
+    nil
   end
 end