Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `.github/ISSUE_TEMPLATE/bug_report.md`:
  Removed upstream, while we had a checkbox telling people to check if the
  issue was present upstream. Removed the file as well.

app/serializers/initial_state_serializer.rb

@@ -33,6 +33,7 @@ class InitialStateSerializer < ActiveModel::Serializer
       source_url: Mastodon::Version.source_url,
       version: Mastodon::Version.to_s,
       invites_enabled: Setting.min_invite_role == 'user',
+      limited_federation_mode: Rails.configuration.x.whitelist_mode,
       mascot: instance_presenter.mascot&.file&.url,
       profile_directory: Setting.profile_directory,
       trends: Setting.trends,