WindowHandleAccessor's static initializer thwarts WindowHandleAccessor.isEnabled()

[marcdownie]

This check for a functioning JdkEx:

jcef/java/org/cef/browser/mac/CefBrowserWindowMac.java

Line 28 in caafb3e

if (JdkEx.WindowHandleAccessor.isEnabled()) {

doesn't work as intended, since WindowHandleAccessor's static initializer will have already thrown here:

jcef/java/com/jetbrains/cef/JdkEx.java

Line 75 in caafb3e

throw new RuntimeException("jcef: failed to retrieve platform window handle");