The new behavior is as follows for SAMs:
No damaged units: fully capable (green)
Damaged but still operational: present (no bar)
Not fully destroyed but inoperable: damaged (yellow)
Fully destroyed: destroyed (red)
And for all other TGOs:
Fully destroyed: destroyed (red)
Any missing units: damaged (yellow)
No missing units: present (no bar)
Fixes https://github.com/dcs-liberation/dcs_liberation/issues/2438.