Bug: player takes damage while falling throught the air

player takes damage while mid air for no reason
observed while using jetpack - when jetpack not in use, player fall down, but take damage and dies mid air, long before hitting the ground.

Reproduce the fall with and without the jetpack, noting when damage and death occur. Trace the player falling and damage handling entry points to determine why damage happens before ground contact; done means falling through the air no longer causes damage or death before landing.

Written by the indexing model from the issue text.