[Bug] Combat maneuver boost/strafe has uncapped velocity if ImpulseEngine component is removed

[oznogon]

Steps to reproduce

1. Launch EE with a player ship that has combat maneuvering
2. In the Lua console on the server, getPlayerShip(-1).components.impulse_engine = nil
3. Engage the combat maneuver controls

Expected behavior

Unclear. Probably lateral strafe is available at the same effectiveness as without an ImpulseEngine.

Observed behavior

Ship goes from 0 to the ~1400u/min velocity cap before the combat maneuver charge is fully drained, and stays there when combat maneuver is disengaged.