Merge commit 'dc09c10fa8cc9230bf14e48d790c8f0c26043f8f' into glitch-soc/merge-upstream

Conflicts:
- `.rubocop_todo.yml`:
  Upstream re-generated the file, while glitch-soc has a specific ignore
  for some file.
  Updated the file as upstream did and kept our extra ignore.
- `config/webpack/shared.js`:
  Upstream added a plugin, but our files are pretty different.
  Added the plugin as well.
- `spec/helpers/application_helper_spec.rb`:
  Upstream refactored tests, but part of them were different because
  of glitch-soc's theming system.
  Applied the refactoring to glitch-soc's change.

spec/controllers/api/v1/instances/translation_languages_controller_spec.rb

@@ -16,8 +16,7 @@ describe Api::V1::Instances::TranslationLanguagesController do
     context 'when a translation service is configured' do
       before do
         service = instance_double(TranslationService::DeepL, languages: { nil => %w(en de), 'en' => ['de'] })
-        allow(TranslationService).to receive(:configured?).and_return(true)
-        allow(TranslationService).to receive(:configured).and_return(service)
+        allow(TranslationService).to receive_messages(configured?: true, configured: service)
       end
 
       it 'returns language matrix' do

spec/controllers/api/v1/statuses/translations_controller_spec.rb

@@ -20,8 +20,7 @@ describe Api::V1::Statuses::TranslationsController do
       before do
         translation = TranslationService::Translation.new(text: 'Hello')
         service = instance_double(TranslationService::DeepL, translate: [translation])
-        allow(TranslationService).to receive(:configured?).and_return(true)
-        allow(TranslationService).to receive(:configured).and_return(service)
+        allow(TranslationService).to receive_messages(configured?: true, configured: service)
         Rails.cache.write('translation_service/languages', { 'es' => ['en'] })
         post :create, params: { status_id: status.id }
       end