Should point attenuation and eye dome lighting on by default?

From offline conversations, I've gotten the impression that almost all users of 3D Tiles point clouds are going to want point attenuation and eye dome lighting turned on, so wouldn't it be a good idea to make them on by default? I don't think new users would think such options even exist if they aren't enabled to begin with.

CC @lilleyse @pjcozzi

No file, test, or entry point is named. Start by locating the 3D Tiles point-cloud rendering code and the existing point attenuation and eye dome lighting options, then determine the expected default behavior and update coverage accordingly.

Written by the indexing model from the issue text.