DCL.Diagnostics.EcsSystemException: [LightSourceApplyPropertiesSystem]

Sentry Issue: [UNITY-EXPLORER-PTZ](https://decentraland.sentry.io/issues/7696501391/)

```
System.NullReferenceException: Object reference not set to an instance of an object.
File "DCL.Plugins__14.cpp", line 31904, in UpdateLightSource
File "DCL.Plugins__14.cpp", line 20620, in UpdateLightSource
File "il2cpp-codegen.h", line 1763, in set_TickNumber
File "DCL.Plugins__14.cpp", line 31745, in set_TickNumber
File "il2cpp-codegen.h", line 67, in Update
...
(15 additional frame(s) were not displayed)

DCL.Diagnostics.EcsSystemException: [LightSourceApplyPropertiesSystem]
File "ECS.Core.cpp", line 7481, in Update
File "Generics__17.cpp", line 24277, in UpdateInternal
File "Generics__17.cpp", line 11756, in UpdateInternal
File "Generics__17.cpp", line 30282, in UpdateInternal
File "Generics__17.cpp", line 11095, in UpdateInternal
...
(5 additional frame(s) were not displayed)
```
This issue was automatically created by Sentry via [Explorer Alpha Github Issue Creation](https://sentry.io/organizations/decentraland/monitors/alerts/3130340/)

Start with the linked Sentry report and inspect the stack entries for UpdateLightSource and LightSourceApplyPropertiesSystem. Trace the reported NullReferenceException to its source and verify that the light-source update path no longer raises the exception under the affected conditions.

Written by the indexing model from the issue text.