Fix issue with duplicate models disappearing when the material mapping on the model asset changes
Fix issue with duplicate models disappearing when the material mapping on the model asset changes

sereepap2029/playcanvas,aidinabedi/playcanvas-engine,playcanvas/engine,RainsSoft/engine,nizihabi/engine,nizihabi/engine,RainsSoft/engine,horryq/engine-1,RainsSoft/engine,H1Gdev/engine,sanyaade-teachings/engine,aidinabedi/playcanvas-engine,guycalledfrank/engine,playcanvas/engine,SuperStarPL/engine,horryq/engine-1,maxwellalive/engine,3DGEOM/engine,nizihabi/engine,guycalledfrank/engine,MicroWorldwide/PlayCanvas,3DGEOM/engine,maxwellalive/engine,SuperStarPL/engine,H1Gdev/engine,shinate/engine,shinate/engine,SuperStarPL/engine,shinate/engine,maxwellalive/engine,MicroWorldwide/PlayCanvas,sanyaade-teachings/engine,sereepap2029/playcanvas,3DGEOM/engine,sereepap2029/playcanvas,sanyaade-teachings/engine,horryq/engine-1