Call to Axis.invalidateRange results in StackOverflowError

This a regression introduced in previous release when correcting use of JavaConverters
```
Exception in thread "JavaFX Application Thread" java.lang.StackOverflowError
	at scalafx.scene.chart.Axis.invalidateRange(Axis.scala:160)
	at scalafx.scene.chart.Axis.invalidateRange(Axis.scala:160)
	at scalafx.scene.chart.Axis.invalidateRange(Axis.scala:160)
...
```