Enable the use of all builtins on the light shader

When using the light process in spatial shader,
the built-ins work as spected, now they work in forward+,
mobile and compatibility renderer.

drivers/gles3/shaders/scene.glsl

@@ -642,6 +642,10 @@ void light_compute(vec3 N, vec3 L, vec3 V, float A, vec3 light_color, bool is_di
 #if defined(USE_LIGHT_SHADER_CODE)
 	// light is written by the light shader
 
+	highp mat4 model_matrix = world_transform;
+	mat4 projection_matrix = scene_data.projection_matrix;
+	mat4 inv_projection_matrix = scene_data.inv_projection_matrix;
+
 	vec3 normal = N;
 	vec3 light = L;
 	vec3 view = V;