Add ransackable attributes to reasons models for search in admin"

Enhanced the search capabilities in the admin panel by updating
the `allowed_ransackable_attributes` of `Spree::AdjustmentReason`,
`Spree::RefundReason`, `Spree::ReimbursementType`, `Spree::ReturnReason`
and `Spree::StoreCreditReason`.

core/app/models/spree/adjustment_reason.rb

@@ -8,5 +8,7 @@ class AdjustmentReason < Spree::Base
  validates :code, presence: true, uniqueness: { case_sensitive: false, allow_blank: true }
 
  scope :active, -> { where(active: true) }
+
+ self.allowed_ransackable_attributes = %w[name code]
  end
 end

core/app/models/spree/refund_reason.rb

@@ -8,6 +8,8 @@ class RefundReason < Spree::Base
 
  has_many :refunds
 
+ self.allowed_ransackable_attributes = %w[name code]
+
  def self.return_processing_reason
  find_by!(name: RETURN_PROCESSING_REASON, mutable: false)
  end

core/app/models/spree/reimbursement_type.rb

@@ -8,6 +8,8 @@ class ReimbursementType < Spree::Base
 
  has_many :return_items
 
+ self.allowed_ransackable_attributes = %w[name]
+
  # This method will reimburse the return items based on however it child implements it
  # By default it takes a reimbursement, the return items it needs to reimburse, and if
  # it is a simulation or a real reimbursement. This should return an array

core/app/models/spree/return_reason.rb

@@ -6,6 +6,8 @@ class ReturnReason < Spree::Base
 
  has_many :return_authorizations
 
+ self.allowed_ransackable_attributes = %w[name]
+
  def self.reasons_for_return_items(return_items)
  # Only allow an inactive reason if it's already associated to a return item
  active | return_items.map(&:return_reason).compact

core/app/models/spree/store_credit_reason.rb

@@ -4,4 +4,6 @@ class Spree::StoreCreditReason < Spree::Base
  include Spree::NamedType
 
  has_many :store_credit_events, inverse_of: :store_credit_reason
+
+ self.allowed_ransackable_attributes = %w[name]
 end