Issue #3375968: Services 'bind' + POC conversions
Changes compared to symfony YamlFileLoader:
- No
$file
parameter when calling ->resolveServices(). - We don't support '_instanceof' key, so we don't use BoundArgument::INSTANCEOF_BINDING.
- The
$trackBindings
parameter does not exist in Drupal, we passtrue
instead.
Closes #3375968