Can't run app using Grails 6 and Spring Integration XML Gateway definition

### Expected Behavior

Gateway definition in xml works correctly like in spring boot 2 and spring integration 5.

### Actual Behaviour

App throws this error during startup:
```
The provided 'BeanDefinitionRegistry' must be an instance of 'ConfigurableBeanFactory' or 'ConfigurableApplicationContext', but given is: class org.springframework.beans.factory.support.SimpleBeanDefinitionRegistry
```

### Steps To Reproduce

1. grails create-app
2. create TestInterface with `void send(Message message)`
3. add resources.xml with `int:gateway` definition in it, referring to testInterface
4. ./gradlew bootRun

Commenting out the gateway definition in resources.xml causes the app to startup fine.

A workaround for this seems to be removing the gateway xml definition and defining the gateway interface like this instead:

```groovy
import org.springframework.integration.annotation.Gateway
import org.springframework.integration.annotation.MessagingGateway
import org.springframework.messaging.Message

@MessagingGateway
interface TestInterface {
@Gateway
void send(Message message)
}

```

This isn't the best workaround for projects that have thousands of lines of spring integration xml definition.

### Environment Information

- Grails 6.2.3
- Spring Integration 5.5.20
- Operating System - tested on both Mac and Linux
- JDK - 17.0.3
- Groovy 3.0.13
- Gradle 7.6.4

### Example Application

https://github.com/ice1080/grails-spring-integration-xml

### Version

6.2.3

Start with the linked example application and its resources.xml gateway definition, then run ./gradlew bootRun to reproduce the startup failure. Trace how the XML gateway is loaded alongside the TestInterface and investigate the BeanDefinitionRegistry error; done means the application starts with the XML gateway definition working.

Written by the indexing model from the issue text.