Fix Rails/WhereExists cop in app/validators (#28854)

app/validators/reaction_validator.rb

@@ -19,7 +19,7 @@ class ReactionValidator < ActiveModel::Validator
   end
 
   def new_reaction?(reaction)
-    !reaction.announcement.announcement_reactions.where(name: reaction.name).exists?
+    !reaction.announcement.announcement_reactions.exists?(name: reaction.name)
   end
 
   def limit_reached?(reaction)

app/validators/vote_validator.rb

@@ -35,7 +35,7 @@ class VoteValidator < ActiveModel::Validator
     if vote.persisted?
       account_votes_on_same_poll(vote).where(choice: vote.choice).where.not(poll_votes: { id: vote }).exists?
     else
-      account_votes_on_same_poll(vote).where(choice: vote.choice).exists?
+      account_votes_on_same_poll(vote).exists?(choice: vote.choice)
     end
   end