[FIX] Shadows for orthographic cameras. Also removed all dynamic allocations for directional shadow casting lights.
[FIX] Shadows for orthographic cameras. Also removed all dynamic allocations for directional shadow casting lights.

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