Warp to target plane/LAN is impossible to cancel.

## MechJeb Version
2.16.0.0-1644

## KSP Version
1.12.3

## Description
Warp is continuously re-initiated even if you cancel it manually, press abort or disengage the guidance completely.
Disabling autowarp doesn't help.

## Replication Case
1. Spawn on the pad, select something as a target, press "Launch to target LAN" and engage.
2. Have fun trying to stop it.
