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

Conflicts:
- `app/controllers/auth/setup_controller.rb`:
  Upstream removed a method close to a glitch-soc theming-related method.
  Removed the method like upstream did.

app/models/account_filter.rb

@@ -55,7 +55,7 @@ class AccountFilter
     when 'by_domain'
       Account.where(domain: value.to_s.strip)
     when 'username'
-      Account.matches_username(value.to_s.strip)
+      Account.matches_username(value.to_s.strip.delete_prefix('@'))
     when 'display_name'
       Account.matches_display_name(value.to_s.strip)
     when 'email'

app/models/preview_card_provider.rb

@@ -18,6 +18,7 @@
 #
 
 class PreviewCardProvider < ApplicationRecord
+  include Paginable
   include DomainNormalizable
   include Attachmentable