@SmithyInternalApi
    public static boolean isCriticalValidator(Class<? extends Validator> validator) {
        return CRITICAL_VALIDATORS.contains(validator);
    }
Checks if the given validator class is a critical validator that should be applied before other downstream
validators are applied.

@param validator Validator class to check.
@return Returns true if the given validator is considered a critical validator.
smithy-model/src/main/java/software/amazon/smithy/model/validation/ValidationUtils.java