Improve group processing (#14279)

* Fix the local group's followers collection

* Fix to accept followed relayed_through_account

* Add local delivery to the group's followers

* Fix code style

* Revert "Add local delivery to the group's followers"

This reverts commit 3237effc19.

app/lib/activitypub/activity.rb

@@ -185,7 +185,7 @@ class ActivityPub::Activity
   end
 
   def followed_by_local_accounts?
-    @account.passive_relationships.exists?
+    @account.passive_relationships.exists? || @options[:relayed_through_account]&.passive_relationships&.exists?
   end
 
   def requested_through_relay?

app/lib/activitypub/tag_manager.rb

@@ -72,16 +72,16 @@ class ActivityPub::TagManager
         account_ids = status.active_mentions.pluck(:account_id)
         to = status.account.followers.where(id: account_ids).each_with_object([]) do |account, result|
           result << uri_for(account)
-          result << account.followers_url if account.group?
+          result << account_followers_url(account) if account.group?
         end
         to.concat(FollowRequest.where(target_account_id: status.account_id, account_id: account_ids).each_with_object([]) do |request, result|
           result << uri_for(request.account)
-          result << request.account.followers_url if request.account.group?
+          result << account_followers_url(request.account) if request.account.group?
         end)
       else
         status.active_mentions.each_with_object([]) do |mention, result|
           result << uri_for(mention.account)
-          result << mention.account.followers_url if mention.account.group?
+          result << account_followers_url(mention.account) if mention.account.group?
         end
       end
     end
@@ -110,16 +110,16 @@ class ActivityPub::TagManager
         account_ids = status.active_mentions.pluck(:account_id)
         cc.concat(status.account.followers.where(id: account_ids).each_with_object([]) do |account, result|
           result << uri_for(account)
-          result << account.followers_url if account.group?
+          result << account_followers_url(account) if account.group?
         end)
         cc.concat(FollowRequest.where(target_account_id: status.account_id, account_id: account_ids).each_with_object([]) do |request, result|
           result << uri_for(request.account)
-          result << request.account.followers_url if request.account.group?
+          result << account_followers_url(request.account) if request.account.group?
         end)
       else
         cc.concat(status.active_mentions.each_with_object([]) do |mention, result|
           result << uri_for(mention.account)
-          result << mention.account.followers_url if mention.account.group?
+          result << account_followers_url(mention.account) if mention.account.group?
         end)
       end
     end