Fix contrast between background and form elements on some pages (#31266)

app/controllers/auth/confirmations_controller.rb

@@ -5,7 +5,6 @@ class Auth::ConfirmationsController < Devise::ConfirmationsController
 
   layout 'auth'
 
-  before_action :set_body_classes
   before_action :set_confirmation_user!, only: [:show, :confirm_captcha]
   before_action :redirect_confirmed_user, if: :signed_in_confirmed_user?
 
@@ -73,10 +72,6 @@ class Auth::ConfirmationsController < Devise::ConfirmationsController
     user_signed_in? && current_user.confirmed? && current_user.unconfirmed_email.blank?
   end
 
-  def set_body_classes
-    @body_classes = 'lighter'
-  end
-
   def after_resending_confirmation_instructions_path_for(_resource_name)
     if user_signed_in?
       if current_user.confirmed? && current_user.approved?

app/controllers/auth/passwords_controller.rb

@@ -3,7 +3,6 @@
 class Auth::PasswordsController < Devise::PasswordsController
   skip_before_action :check_self_destruct!
   before_action :redirect_invalid_reset_token, only: :edit, unless: :reset_password_token_is_valid?
-  before_action :set_body_classes
 
   layout 'auth'
 
@@ -24,10 +23,6 @@ class Auth::PasswordsController < Devise::PasswordsController
     redirect_to new_password_path(resource_name)
   end
 
-  def set_body_classes
-    @body_classes = 'lighter'
-  end
-
   def reset_password_token_is_valid?
     resource_class.with_reset_password_token(params[:reset_password_token]).present?
   end

app/controllers/auth/registrations_controller.rb

@@ -105,7 +105,7 @@ class Auth::RegistrationsController < Devise::RegistrationsController
   private
 
   def set_body_classes
-    @body_classes = %w(edit update).include?(action_name) ? 'admin' : 'lighter'
+    @body_classes = 'admin' if %w(edit update).include?(action_name)
   end
 
   def set_invite

app/controllers/auth/sessions_controller.rb

@@ -16,8 +16,6 @@ class Auth::SessionsController < Devise::SessionsController
 
   include Auth::TwoFactorAuthenticationConcern
 
-  before_action :set_body_classes
-
   content_security_policy only: :new do |p|
     p.form_action(false)
   end
@@ -103,10 +101,6 @@ class Auth::SessionsController < Devise::SessionsController
 
   private
 
-  def set_body_classes
-    @body_classes = 'lighter'
-  end
-
   def home_paths(resource)
     paths = [about_path, '/explore']
 

app/controllers/auth/setup_controller.rb

@@ -5,7 +5,6 @@ class Auth::SetupController < ApplicationController
 
   before_action :authenticate_user!
   before_action :require_unconfirmed_or_pending!
-  before_action :set_body_classes
   before_action :set_user
 
   skip_before_action :require_functional!
@@ -35,10 +34,6 @@ class Auth::SetupController < ApplicationController
     @user = current_user
   end
 
-  def set_body_classes
-    @body_classes = 'lighter'
-  end
-
   def user_params
     params.require(:user).permit(:email)
   end