Fix post translation erroring out (v4.0.x) (#26991)

app/lib/translation_service/deepl.rb

@@ -46,7 +46,7 @@ class TranslationService::DeepL < TranslationService
 
     raise UnexpectedResponseError unless json.is_a?(Hash)
 
-    Translation.new(text: json.dig('translations', 0, 'text'), detected_source_language: json.dig('translations', 0, 'detected_source_language')&.downcase, provider: 'DeepL.com')
+    Translation.new(text: Sanitize.fragment(json.dig('translations', 0, 'text'), Sanitize::Config::MASTODON_STRICT), detected_source_language: json.dig('translations', 0, 'detected_source_language')&.downcase, provider: 'DeepL.com')
   rescue Oj::ParseError
     raise UnexpectedResponseError
   end

app/lib/translation_service/libre_translate.rb

@@ -37,7 +37,7 @@ class TranslationService::LibreTranslate < TranslationService
 
     raise UnexpectedResponseError unless json.is_a?(Hash)
 
-    Translation.new(text: json['translatedText'], detected_source_language: source_language, provider: 'LibreTranslate')
+    Translation.new(text: Sanitize.fragment(json['translatedText'], Sanitize::Config::MASTODON_STRICT), detected_source_language: source_language, provider: 'LibreTranslate')
   rescue Oj::ParseError
     raise UnexpectedResponseError
   end

app/services/translate_status_service.rb

@@ -12,8 +12,8 @@ class TranslateStatusService < BaseService
     @content = status_content_format(@status)
     @target_language = target_language
 
-    Rails.cache.fetch("translations/#{@status.language}/#{@target_language}/#{content_hash}", expires_in: CACHE_TTL) do
-      Sanitize.fragment(translation_backend.translate(@content, @status.language, @target_language), Sanitize::Config::MASTODON_STRICT)
+    Rails.cache.fetch("translations:v2/#{@status.language}/#{@target_language}/#{content_hash}", expires_in: CACHE_TTL) do
+      translation_backend.translate(@content, @status.language, @target_language)
     end
   end