Consider aligning default scope for @Bean when you use it to mark a class or via a factory

[sdelamo]

This would be @Prototype scope:

@Bean
class Robot {
}

however, the following code defaults to@Singleton:

@Factory
class RobotFactor {
@Bean
Robot create() {
    return new Robot();
}
}

I think it would be less confusing to have them both default to the same scope. Maybe,

@Bean
class Robot {
}

should be a @Singleton in Micronaut 4?

[dstepanov]

We also need to define what annotations are inherited to the bean from the factory method and class.

[graemerocher]

it is a bug that the factory version defaults to singleton IMO

[alvarosanchez]

The factory class itself is a singleton, which looks correct to me. What are prototypes are the beans created by it