Required constraint sometimes lets undefined fields through

[VictorWesterlund]

With the following Ruleset:

Ruleset->POST([
    (new Rules("id"))
        ->required()
        ->type(Type::STRING),
    
    (new Rules("user"))
        ->required()
        ->type(Type::STRING)
        ->max(128),
    
    (new Rules("active"))
        ->required()
        ->type(Type::BOOLEAN),
    
    (new Rules("expires"))
        ->required()
        ->type(Type::NUMBER)
        ->max(PHP_INT_MAX)
]);

Sending the following data with Reflect PHP Client syntax:

Client->call("endpoint", Method::PUT, [
  "active" => true
]);

Will still let the request through to main() despite a lot of required() rules missing. The missing rules have their $_POST values set to null, so it does at least initialize processing on them.