make rts ai not affect core ships

[jehosula]

Describe what you would like changed, and why.

currently if you try to mix base builder ai and rts ai then base builder ai attacks with the core ships that are supposed to be used by base builder ai to build stuff make it so that rts ai sets alpha, beta and gamma to rebuild instead of sending them like normal units so you can combine both

Describe the changes you want to propose. Include possible alternatives.

make it so that rts ai sets alpha, beta and gamma to rebuild instead of sending them like normal maybe even add poly and mega to this

[jehosula]

it seems like it sets core ships to rebuild if you enable rts ai after base builder ai, but it should be all the time