Animation finished callback only fires once correctly

[rubit0]

mixed-reality-extension-sdk/packages/sdk/src/animation/animation.ts

Line 286 in ad6028f

if (this._finished) {

The null check will always return the fulfilled original promise from a previous playback and so when an animation is played the next time again, it will immediately trigger the promise.

This is my workaround to "clear" the animation before playing again:

public static FixFinishedCallback(animation: MRE.Animation) {
    const animationToFix = animation as any;
    animationToFix._finished = null;
}

I think to solve the issue, the code in the if branch should only return the original promise as long it has not been resolved/fulfilled.