chore: Add resolve action in Dialogflow Integration (#3900)

spec/lib/integrations/dialogflow/processor_service_spec.rb

@@ -75,6 +75,20 @@ describe Integrations::Dialogflow::ProcessorService do
       end
     end
 
+    context 'when dialogflow returns resolve action' do
+      let(:dialogflow_response) do
+        ActiveSupport::HashWithIndifferentAccess.new(
+          fulfillment_messages: [{ payload: { action: 'resolve' } }, { text: dialogflow_text_double }]
+        )
+      end
+
+      it 'resolves the conversation without moving it to an agent' do
+        processor.perform
+        expect(conversation.reload.status).to eql('resolved')
+        expect(conversation.messages.last.content).to eql('hello payload')
+      end
+    end
+
     context 'when conversation is not bot' do
       let(:conversation) { create(:conversation, account: account, status: :open) }