Draft: Make `StringPartsConstraintValidator` work again — thanks to @phenaproxima a...
requested to merge issue/drupal-3324140:3324140-convert-fieldstorageconfig-and-fieldconfig-rebased into 11.x
Make StringPartsConstraintValidator work again — thanks to @phenaproxima a proper entity:field_storage_config data definition is used during validation, and the validation logic was assuming pure config schema until now.
Closes #3324140