Fix `Style/TernaryParentheses` cop (#28387)

.rubocop_todo.yml

@@ -279,13 +279,6 @@ Style/StringLiterals:
     - 'config/initializers/webauthn.rb'
     - 'config/routes.rb'
 
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: EnforcedStyle, AllowSafeAssignment.
-# SupportedStyles: require_parentheses, require_no_parentheses, require_parentheses_when_complex
-Style/TernaryParentheses:
-  Exclude:
-    - 'config/environments/development.rb'
-
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: EnforcedStyleForMultiline.
 # SupportedStylesForMultiline: comma, consistent_comma, no_comma

config/environments/development.rb

@@ -85,7 +85,7 @@ Rails.application.configure do
   # If using a Heroku, Vagrant or generic remote development environment,
   # use letter_opener_web, accessible at  /letter_opener.
   # Otherwise, use letter_opener, which launches a browser window to view sent mail.
-  config.action_mailer.delivery_method = (ENV['HEROKU'] || ENV['VAGRANT'] || ENV['REMOTE_DEV']) ? :letter_opener_web : :letter_opener
+  config.action_mailer.delivery_method = ENV['HEROKU'] || ENV['VAGRANT'] || ENV['REMOTE_DEV'] ? :letter_opener_web : :letter_opener
 
   # We provide a default secret for the development environment here.
   # This value should not be used in production environments!