X2Effect_Regeneration does not check if the unit is dead before healing them

[Mitzruti]

Which can result in "zombie" units that keep coming back to life until the regen expires.

While setting the effect to expire when the unit dies helps with this, it can also lead to passive abilities being lost on bleedout (only mostly dead, as opposed to all dead). ...and several modded abilities forget to do so, resulting in the original problem.

Suggested fix: add a check in the effect immediately after getting the unit state to ensure it can be healed.
possibly adjust stasis vest so it is no longer removed on "death".