limit embargo/lease date validation to create

introduce a wrapper for `Hydra::AccessControls::Embargoable` with less agressive
validation behavior.

app/models/concerns/hyrax/embargoable.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+module Hyrax
+  module Embargoable
+    included { include Hydra::AccessControls::Embargoable }
+
+    validates :lease_expiration_date, 'hydra/future_date': true, on: :create
+    validates :embargo_release_date, 'hydra/future_date': true, on: :create
+
+    ##
+    # Override aggressive Hydra::AccessControls validation
+    def enforce_future_date_for_embargo?
+      false
+    end
+
+    ##
+    # Override aggressive Hydra::AccessControls validation
+    def enforce_future_date_for_lease?
+      false
+    end
+  end
+end

app/models/concerns/hyrax/work_behavior.rb

@@ -14,7 +14,7 @@ module WorkBehavior
     include Naming
     include CoreMetadata
     include InAdminSet
-    include Hydra::AccessControls::Embargoable
+    include Hyrax::Embargoable
     include GlobalID::Identification
     include NestedWorks
     include Suppressible

lib/wings/active_fedora_converter/default_work.rb

@@ -100,6 +100,9 @@ class DefaultWork < ActiveFedora::Base
       include Hydra::AccessControls::Embargoable
       property :nested_resource, predicate: ::RDF::URI("http://example.com/nested_resource"), class_name: "Wings::ActiveFedoraConverter::NestedResource"
 
+      validates :lease_expiration_date, 'hydra/future_date': true, on: :create
+      validates :embargo_release_date, 'hydra/future_date': true, on: :create
+
       class_attribute :valkyrie_class
       self.valkyrie_class = Hyrax::Resource
 
@@ -121,6 +124,18 @@ def to_rdf_representation
         alias to_s inspect
       end
 
+      ##
+      # Override aggressive Hydra::AccessControls validation
+      def enforce_future_date_for_embargo?
+        false
+      end
+
+      ##
+      # Override aggressive Hydra::AccessControls validation
+      def enforce_future_date_for_lease?
+        false
+      end
+
       def indexing_service
         Hyrax::ValkyrieIndexer.for(resource: valkyrie_resource)
       end