[6.0 beta 2] attack capital turret setting doesn't shoot at piers

[rudi_pioneer]

In this save, turrets shot all station modules except for piers, when on 'shoot capitals' setting (rattlesnake, L paranid turrets, ARG station)

Save: https://file.io/1pYEq1DWRVdT

[rudi_pioneer]

(note: savegame says modified because i was testing a mod that modified Windfall background and forgot i had it when i saved while back, but there's nothing changed in save or gameplay because of that)