Gorm failures for Micronaut 3

[sdelamo]

In Micronaut 2.5.x such a Data service:

package example.micronaut

import grails.gorm.multitenancy.WithoutTenant
import grails.gorm.multitenancy.CurrentTenant
import grails.gorm.services.Service

@CurrentTenant // <1>
@Service(Book) // <2>
interface BookService {
    Book save(String title)
    List<Book> findAll()

    @WithoutTenant
    void delete(Serializable id)

}

was registered as a singleton. In Micronaut 3 it fails with:

Failed to inject value for parameter [bookService] of class: example.micronaut.BookControllerSpec

Message: No bean of type [example.micronaut.BookService] exists. Make sure the bean is not disabled by bean requirements (enable trace logging for 'io.micronaut.context.condition' to check) and if the bean is enabled then ensure the class is declared a bean and annotation processing is enabled (for Java and Kotlin the 'micronaut-inject-java' dependency should be configured as an annotation processor).
Path Taken: BookControllerSpec.setBookService([BookService bookService])```

Trying the work around of annotating the data service with `jakarta.inject.Singleton` it fails with: 

No GORM implementations configured. Ensure GORM has been initialized correctly
java.lang.IllegalStateException: No GORM implementations configured. Ensure GORM has been initialized correctly
at org.grails.datastore.gorm.GormEnhancer.findSingleDatastore(GormEnhancer.groovy:378)
at grails.gorm.multitenancy.Tenants.withId(Tenants.groovy:166)
at example.micronaut.BookControllerSpec.test hello world response(BookControllerSpec.groovy:25)

This affects two guides: 

-  micronaut-multitenancy-propagation-gradle-groovy
-   micronaut-database-authentication-provider


You can generate the sample projects and test script with: 

`./gradlew -Dmicronaut.guide=micronaut-multitenancy-propagation build;`
-