Spring Provide a method to retrieve all singleton autowire candidates from the bean factory

Please see https://github.com/spring-projects/spring-boot/issues/44706 for background. It would be useful to have a method similar to SimpleAutowireCandidateResolver.resolveAutowireCandidates(ConfigurableListableBeanFactory, Class<T>) that only considers singleton beans. The key to addressing https://github.com/spring-projects/spring-boot/issues/44706 is to avoid any attempt to create prototype beans.

Comment From: jhoeller

I ended up exposing the same arguments as for the overloaded getBeanNamesForType/getBeansOfType variant: includeNonSingletons and allowEagerInit.

Comment From: jhoeller

Reopening for an includeNonSingletons variant of ObjectProvider.stream/orderedStream.