Fix slider crash when min and max are equal

[mueller-ma]

Fatal Exception: java.lang.IllegalStateException: valueFrom(0.0) must be smaller than valueTo(0.0)
       at com.google.android.material.slider.BaseSlider.validateValueFrom(BaseSlider.java:520)
       at com.google.android.material.slider.BaseSlider.validateConfigurationIfDirty(BaseSlider.java:608)
       at com.google.android.material.slider.BaseSlider.maybeCalculateTicksCoordinates(BaseSlider.java:1615)
       at com.google.android.material.slider.BaseSlider.updateTrackWidth(BaseSlider.java:1636)
       at com.google.android.material.slider.BaseSlider.onSizeChanged(BaseSlider.java:1606)

Signed-off-by: mueller-ma [email protected]