Bugfix:  AI's will no longer disintegrate if they click the supermatter.

While hilarious this is a terrible bug.
Bugfix:  AI no longer dies if touching the supermatter, using attack_ai instead of a isAI() check.
Merge pull request #4026 from Ccomp5950/ai_supermatter_badtouch

Bugfix:  AI's will no longer disintegrate if they click the supermatter.