Reflection(Class)Constant::__toString() should not warn on NAN conversions

[DanielEScherzer]

<?php

echo new ReflectionConstant('NAN');

class Demo {
    public const MY_NAN = NAN;
}

echo new ReflectionClassConstant(Demo::class, 'MY_NAN');

results in:

Warning: unexpected NAN value was coerced to string in /in/868PE on line 3
Constant [ <persistent> float NAN ] { NAN }

Warning: unexpected NAN value was coerced to string in /in/868PE on line 9
Constant [ public float MY_NAN ] { NAN }

but the reflection extension shouldn't emit these warnings when the extension is responsible for the conversion - they are emitted by the __toString() call, not the echo