Tween module's tween.add object continues being referenced after stop() is called

[firecakes]

Describe the bug
If you call stop on a tween, any subsequent tweens that modify the same property will only write to that property temporarily before the "stopped" tween updates its final position again.

To Reproduce
Run this code, which stops one tween and then starts another with the same property.

this.tween = tween.add({
    obj: this,
    fields: {x: this.x + 64},
    duration: 1000
})
// half second later
setTimeout(() => {
    this.tween.stop()
}, 500)
// second later
setTimeout(() => {
    tween.add({
        obj: this,
        fields: {x: this.x + 64},
        duration: 1000
    })
}, 2000)

Expected behavior
The object should land 128 pixels to the right of where it started.

System information report
Ct.js v5.2.1 😽 (packaged)

NW.JS v0.72.0
Chromium v109.0.5414.87
Node.js v19.3.0
Pixi.js v7.3.2

WebGL available
WebGL vendor Google Inc. (AMD)
WebGL renderer ANGLE (AMD, AMD Custom GPU 0932 (radeonsi vangogh LLVM 19.1.7), OpenGL 4.6)
OS linux x64 // Linux 6.5.0-valve22-1-neptune-65-g9a338ed8a75e