Describe the bug
I created a CountryField in my CrudController and want to use the Alpha3 format, but when I set it, in the New and Edit Form, all the flags are shown as UNKNOWN, even in the HTML code.
If I use the default Alpha2 format, the flags are shown normally.
In the Index and Detail pages, the flags are shown properly when using both Alpha3 and Alpha2.
To Reproduce
EasyAdmin version: 3.2.1
@MyCrudController
public function configureFields(string $pageName): iterable
{
$country = CountryField::new('country')
->setCustomOption(CountryField::OPTION_COUNTRY_CODE_FORMAT, CountryField::FORMAT_ISO_3166_ALPHA3)
;
return [$country];
}
Additional context
When using the Alpha3 format:


When using the Alpha2 format:


Describe the bug
I created a CountryField in my CrudController and want to use the Alpha3 format, but when I set it, in the New and Edit Form, all the flags are shown as UNKNOWN, even in the HTML code.
If I use the default Alpha2 format, the flags are shown normally.
In the Index and Detail pages, the flags are shown properly when using both Alpha3 and Alpha2.
To Reproduce
EasyAdmin version: 3.2.1
Additional context

When using the Alpha3 format:
When using the Alpha2 format:
