Add support for !service_closure custom tag in YamlFileLoader

Problem/Motivation

Since #3108309: Support Yaml::PARSE_CUSTOM_TAGS in \Drupal\Component\Serialization\YamlSymfony::decode we support custom tags in \Drupal\Core\DependencyInjection\YamlFileLoader but do not have explicit support for the !service_closure custom tag. We should add it.

Steps to reproduce

Proposed resolution

Add support for !service_closure custom tag in YamlFileLoader

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet