refactor: min password length simplification

app/controllers/auth/passwords_controller.rb

@@ -1,5 +1,6 @@
 class Auth::PasswordsController < Devise::PasswordsController
   include Helpers::Email
+  before_action :set_minimum_password_length, only: %i[edit create]
 
   def reset_confirmation
     self.resource = resource_class.new
@@ -24,13 +25,11 @@ class Auth::PasswordsController < Devise::PasswordsController
 
   def edit
     super
-    minimum_password_length
     @confirmation = params["confirmation"]
     render "devise/passwords/reset_password"
   end
 
   def update
-    minimum_password_length
     self.resource = resource_class.reset_password_by_token(resource_params)
     yield resource if block_given?
 
@@ -53,8 +52,8 @@ class Auth::PasswordsController < Devise::PasswordsController
 
 protected
 
-  def minimum_password_length
-    @minimum_password_length ||= Devise.password_length.min
+  def set_minimum_password_length
+    @minimum_password_length = Devise.password_length.min
   end
 
   def set_2fa_required