* resets state updater to apply light settings (#3141)
resets state updater to apply light settings
With this PR we achieve the same effect with fewer lines of code.
* fixes LightSource logic errors
We currently update `LightSource::setActorFade` in `TransparencyUpdater`. There are several logic errors inherent in this approach:
1. We fail to update `LightSource::setActorFade` for off screen actors because their `TransparencyUpdater` cull callback is not invoked.
2. We fail to update `LightSource::setActorFade` in the instant that a `TransparencyUpdater` is removed.
3. We fail to update `setActorFade` when an `mExtraLightSource` is created after calling `Animation::setAlpha`.
With this PR we avoid such issues by updating `LightSource::setActorFade` in `Animation::setAlpha` and `Animation::addExtraLightSource` instead.
3042c000c6