981fa22302
Inertias of moving bodies are enforced to be greater mjMINVAL at model compilation, there is no need to enforce inertias at mesh load time. Tiny meshes could be static or part of a larger geom assembly, in which case their tiny inertia is not a problem. Also, make error message for small masses/inertias more precise. PiperOrigin-RevId: 451625216 Change-Id: I4b48d7a881e620d6fbb591ec77fbdacc7c03496c