Fix default values not being properly loaded for ArraySerialized fields#6231

mimarcel wants to merge 2 commits intomagento:2.3-developmagento/magento2:2.3-developfrom

mimarcel:fix/default_values_are_not_loaded_for_fields_with_backend_model_ArraySearializedmimarcel/magento2:fix/default_values_are_not_loaded_for_fields_with_backend_model_ArraySearializedCopy head branch name to clipboard