validateFieldValue method
Validates value against the schema and validators of fieldName.
This is a pure public validation helper: it returns validation errors but
does not update errors, does not emit onValidationError, and does not
show or clear UI errors. Grid/editor bindings use the internal
validate-and-emit path when they need interactive feedback.
Implementation
List<FdcValidationError> validateFieldValue(String fieldName, Object? value) {
return _validateFieldValue(fieldName, value, emitErrors: false);
}