FIX: Do not validate email in TL promotion (#20892)

There is no need to validate the user's emails when
promoting/demoting their trust level, this can cause
issues in things like Jobs::Tl3Promotions, we don't
need to fail in that case when all we are doing is changing
trust level.

lib/promotion.rb

@@ -82,6 +82,7 @@ class Promotion
           new_value: new_level,
         )
       end
+      @user.skip_email_validation = true
       @user.save!
       @user.user_profile.recook_bio
       @user.user_profile.save!