[FIX] fullscreen event polyfill fires events from correct element.
[FIX] fullscreen event polyfill fires events from correct element.

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