Convert Ldp::Gone to ObjectNotFoundError

Ldp::Gone is the error raised by the fedora adapter when the resource is a tombstone after being deleted.

app/services/hyrax/custom_queries/find_access_control.rb

@@ -20,7 +20,7 @@ def find_access_control_for(resource:)
           .find_inverse_references_by(resource: resource, property: :access_to)
           .find { |r| r.is_a?(Hyrax::AccessControl) } ||
           raise(Valkyrie::Persistence::ObjectNotFoundError)
-      rescue ArgumentError # some adapters raise ArgumentError for missing resources
+      rescue ArgumentError, Ldp::Gone # some adapters raise ArgumentError for missing resources
         raise(Valkyrie::Persistence::ObjectNotFoundError)
       end
     end

spec/services/hyrax/custom_queries/find_access_control_spec.rb

@@ -15,6 +15,17 @@
       end
     end
 
+    context 'for deleted object' do
+      let(:resource) { persister.save(resource: Hyrax::Resource.new) }
+
+      before { persister.delete(resource: resource) }
+
+      it 'raises ObjectNotFoundError' do
+        expect { query_handler.find_access_control_for(resource: resource) }
+          .to raise_error Valkyrie::Persistence::ObjectNotFoundError
+      end
+    end
+
     context 'when an acl exists' do
       let(:acl)      { persister.save(resource: Hyrax::AccessControl.new(access_to: resource.id)) }
       let(:resource) { persister.save(resource: Hyrax::Resource.new) }