For the boid Fight rule (and when determining friend/enemy health), we
need to check if other `ParticleTarget` psys is actually boids as well
(their health data is accessed -- which is only present on boid particle
systems), otherwise NULL data access crashes.
I know, EOL, but simple crash fixers should still get a chance to get in
I think.
Could also go into LTSes.
Pull Request: https://projects.blender.org/blender/blender/pulls/126494
0d4e2ea40d