[Bug/Feature request] Support various scales with bullet physics (low priority)

Not much to say. Basically anything that doesnt have a scale of 1 with physics enabled glitches out in Kha/Krom at the time being (weird "shaking" behaviour) - works fine in Blenders internal physics engine.

One might argue its not a big deal but its not very easy for beginners to know that the scale has to be 1 - and even if you do know it can be easy to forget something like this from time to time.

The issue names no file, test, or entry point. Start by reproducing the shaking behavior in Kha/Krom with physics enabled and a non-1 object scale, then compare it with Blender's internal physics behavior. Done means supported non-1 scales no longer produce the reported glitches.

Written by the indexing model from the issue text.