fix model component meshInstances property
fix model component meshInstances property

H1Gdev/engine,aidinabedi/playcanvas-engine,sereepap2029/playcanvas,guycalledfrank/engine,guycalledfrank/engine,sereepap2029/playcanvas,playcanvas/engine,aidinabedi/playcanvas-engine,playcanvas/engine,MicroWorldwide/PlayCanvas,MicroWorldwide/PlayCanvas,H1Gdev/engine,sereepap2029/playcanvas