fix incorrect lightmap dilation
fix incorrect lightmap dilation

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