HDRenderLoop: Really fix the previous Max area light limit - dumb commit

Assets/ScriptableRenderLoop/HDRenderLoop/HDRenderLoop.cs

 
                 if (light.lightType == LightType.Directional)
                 {
-                    if (lightList.areaLights.Count >= k_MaxAreaLightsOnSCreen)
+                    if (lightList.directionalLights.Count >= k_MaxDirectionalLightsOnSCreen)
                         continue;
 
                     var directionalLightData = new DirectionalLightData();