Fix Rails/WhereExists cop in CLI (#25123)

.rubocop_todo.yml

@@ -890,7 +890,6 @@ Rails/WhereExists:
     - 'app/validators/vote_validator.rb'
     - 'app/workers/move_worker.rb'
     - 'db/migrate/20190529143559_preserve_old_layout_for_existing_users.rb'
-    - 'lib/mastodon/cli/email_domain_blocks.rb'
     - 'lib/tasks/tests.rake'
     - 'spec/controllers/api/v1/accounts/notes_controller_spec.rb'
     - 'spec/controllers/api/v1/tags_controller_spec.rb'

lib/mastodon/cli/email_domain_blocks.rb

@@ -39,7 +39,7 @@ module Mastodon::CLI
       processed = 0
 
       domains.each do |domain|
-        if EmailDomainBlock.where(domain: domain).exists?
+        if EmailDomainBlock.exists?(domain: domain)
           say("#{domain} is already blocked.", :yellow)
           skipped += 1
           next
@@ -60,7 +60,7 @@ module Mastodon::CLI
         (email_domain_block.other_domains || []).uniq.each do |hostname|
           another_email_domain_block = EmailDomainBlock.new(domain: hostname, parent: email_domain_block)
 
-          if EmailDomainBlock.where(domain: hostname).exists?
+          if EmailDomainBlock.exists?(domain: hostname)
             say("#{hostname} is already blocked.", :yellow)
             skipped += 1
             next