Fix TranslationControllerTest LocaleAssignment offenses
Fix TranslationControllerTest LocaleAssignment offenses

Fix Rails/I18nLocaleAssignment offenses in TranslationControllerTest
Use `with_locale` blocks instead of switching local with `locale =`

MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer