Parameter drivers for triggers are not simulated.

[JustBuddy]

While working on an asset, I noticed that GM doesn't respond to parameter drivers driving parameters of the type trigger. Those drivers are seemingly skipped. This works fine ingame, is just not emulated correctly.

The parameter driver drives a trigger that does its thing on a different Layer, both are on the "Action" playable layer, if that matters.

Repro:

1. Create a trigger parameter
2. Create logic with a parameter driver that drives that trigger.
3. Trigger won't change in play-mode.