fix stencil properties constructor
fix stencil properties constructor

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