Some easing curves are misinterpreted in Lottie

See the Lottie animation at https://lottiefiles.com/free-animation/usa-map-with-outlines-blue-HdVa05uIT6

(This is also included in the lottietoqml example)

With the status quo at the time of writing, the final part of the animation (where the states are scaling down and fading out) looks correct with VectorImage and not with LottieAnimation

This appears to be due to how the easing curve is calculated by Qt Lottie Animation, because when https://codereview.qt-project.org/c/qt/qtlottie/+/658109 is applied and easing information is passed on to VectorImage, then the same behavior can be witness in VectorImage as well