Scale ratio is set to 1 in MainWindow even if display size < target size

[AlmasB]

Describe the bug
If settings.isScaleAffectedOnResize is false, then we set:

            scaleRatioX.value = 1.0
            scaleRatioY.value = 1.0

FXGL/fxgl/src/main/kotlin/com/almasb/fxgl/app/MainWindow.kt

Lines 420 to 433 in 43a1a24

	if (settings.isScaleAffectedOnResize) {
	if (settings.isPreserveResizeRatio) {
	scaleRatioX.bind(Bindings.min(
	scaledWidth.divide(settings.width), scaledHeight.divide(settings.height)
	))
	scaleRatioY.bind(scaleRatioX)
	} else {
	scaleRatioX.bind(scaledWidth.divide(settings.width))
	scaleRatioY.bind(scaledHeight.divide(settings.height))
	}
	} else {
	scaleRatioX.value = 1.0
	scaleRatioY.value = 1.0

This can potentially be problematic if display size < target size

To Reproduce
Need to make a sample with target size set to larger than display size and set isScaleAffectedOnResize to false.

Additional context / possible fixes
Should be fixable by setting the above scale values based on display size / target size ratio?

To fix, first identify that this is indeed a bug and explain what happens in the above case.