[RFR] JDK-8208173 bug is U+11FF return false in isComplexCharCode()

[Nakajima Akira]

Hi,

Please review following Github PR,

https://github.com/javafxports/openjdk-jfx/pull/407

JBS: https://bugs.openjdk.java.net/browse/JDK-8208173

Regards,
Nakajima Akira