fix: Update email message_id parsing order (#3073)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

spec/mailboxes/application_mailbox_spec.rb

@@ -6,6 +6,7 @@ RSpec.describe ApplicationMailbox, type: :mailbox do
   describe 'route the inbound mail to appropriate mailbox' do
     let(:welcome_mail) { create_inbound_email_from_fixture('welcome.eml') }
     let(:reply_mail) { create_inbound_email_from_fixture('reply.eml') }
+    let(:reply_mail_without_uuid) { create_inbound_email_from_fixture('reply.eml') }
     let(:support_mail) { create_inbound_email_from_fixture('support.eml') }
 
     describe 'Default' do
@@ -24,6 +25,13 @@ RSpec.describe ApplicationMailbox, type: :mailbox do
         expect(dbl).to receive(:perform_processing).and_return(true)
         described_class.route reply_mail
       end
+
+      it 'routes reply emails to Reply Mailbox without uuid' do
+        dbl = double
+        expect(ReplyMailbox).to receive(:new).and_return(dbl)
+        expect(dbl).to receive(:perform_processing).and_return(true)
+        described_class.route reply_mail_without_uuid
+      end
     end
 
     describe 'Support' do