Fix duplicate branch in Spree::Preference#value method

:string, :text and :password cases have the same value

.rubocop_todo.yml

@@ -30,7 +30,7 @@ Lint/DuplicateBranch:
     # - 'app/helpers/spree/admin/base_helper.rb'
     # - 'app/models/enterprise.rb'
     # - 'app/models/spree/calculator.rb'
-    - 'app/models/spree/preference.rb'
+    # - 'app/models/spree/preference.rb'
     - 'app/models/spree/preferences/preferable.rb'
 
 # Offense count: 2

app/models/spree/preference.rb

@@ -16,9 +16,7 @@ module Spree
     def value
       if self[:value_type].present?
         case self[:value_type].to_sym
-        when :string, :text
-          self[:value].to_s
-        when :password
+        when :string, :text, :password
           self[:value].to_s
         when :decimal
           BigDecimal(self[:value].to_s, exception: false)&.round(2, BigDecimal::ROUND_HALF_UP) ||