Remove auto-silence behaviour from spam check (#12117)

Fix #12113

app/lib/spam_check.rb

@@ -44,7 +44,6 @@ class SpamCheck
   end
 
   def flag!
-    auto_silence_account!
     auto_report_status!
   end
 
@@ -134,17 +133,13 @@ class SpamCheck
     text.gsub(/\s+/, ' ').strip
   end
 
-  def auto_silence_account!
-    @account.silence!
-  end
-
   def auto_report_status!
     status_ids = Status.where(visibility: %i(public unlisted)).where(id: matching_status_ids).pluck(:id) + [@status.id] if @status.distributable?
     ReportService.new.call(Account.representative, @account, status_ids: status_ids, comment: I18n.t('spam_check.spam_detected_and_silenced'))
   end
 
   def already_flagged?
-    @account.silenced?
+    @account.silenced? || @account.targeted_reports.unresolved.where(account_id: -99).exists?
   end
 
   def trusted?