Autowired services can't be used in ServiceProviderInterface

Problem/Motivation

ServiceProviderTestServiceProvider::alter has $container->get('module_handler'). If module handler itself or a service it receives is autowired, this fails because AutowireServicePass runs after ModifyServiceDefinitionsPass

Steps to reproduce

Convert module handler to autowire, watch the test fail.

Proposed resolution

Remove this call and document not to run $container->get from inside ServiceModifierInterface::alter. It is there to modify services, after all.

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet