FlxTween.cancelChain() doesn't function correctly if tween has completed

• Haxe version: 4.2.4
• Flixel version: 5.2.2
• OpenFL version: 9.2.1
• Lime version: 7.9.0
• Affected targets:
  All

Code snippet reproducing the issue:
https://github.com/MondayHopscotch/TweenTest)https://github.com/MondayHopscotch/TweenTest

Reproduction steps:

1. Create a tween with chained tweens (Tween.then(Tween))
2. Save initial tween as variable (ex: var mainTween:FlxTween)
3. After parent tween has completed, attempt to call mainTween.cancelChain()

Observed behavior:
Tween chain continues despite .cancelChain() being called on parent tween.

Expected behavior:
All tweens chained under parent tween are canceled.

In the case of my example project, expected behavior is that the square sprite stops tweening halfway through turning blue.

Extra Context:
https://discord.com/channels/162395145352904705/165234904815239168/1069465074219098122

This line is the culprit with how the current default manager operates:
https://github.com/HaxeFlixel/flixel/commit/b2436a63ccdb24f431088f06e5c4b06420126dde

Start at FlxTween.cancelChain() and the default-manager behavior referenced by commit b2436a63ccdb24f431088f06e5c4b06420126dde. Reproduce the chained Tween.then() case from the linked example, then verify that calling cancelChain() after the parent completes stops all remaining chained tweens.