client: use static world shadows

Currently very performance heavy to have dynamic shadows for everything so disabling for now, meaning:
No player shadows until somebody bake map shadow into texture light map or we switch to webgpu and use selective lights for world and player layer

Author: solcloud

www/assets/js/ModelRepository.js

@@ -49,6 +49,8 @@ export class ModelRepository {
             sun.shadow.mapSize.width = 4096
             sun.shadow.mapSize.height = 4096
             sun.shadow.bias = -0.00018
+            sun.shadow.autoUpdate = false
+            sun.shadow.needsUpdate = true
             sun.shadow.camera.near = 3000
             sun.shadow.camera.far = 15500
             sun.shadow.camera.left = -5000