Fix Avatar nullrefs detected at Rarible event

[pravusjif]

1. Assets/Scripts/MainScripts/DCL/Components/Avatar/BodyShapeController.cs:56

NullReferenceException: Object reference not set to an instance of an object
BodyShapeController.SetupEyes (UnityEngine.Material material, UnityEngine.Texture texture, UnityEngine.Texture mask, UnityEngine.Color color) (at Assets/Scripts/MainScripts/DCL/Components/Avatar/BodyShapeController.cs:56)
FacialFeatureController.PrepareWearable () (at Assets/Scripts/MainScripts/DCL/Components/Avatar/FacialFeatureController.cs:54)
FacialFeatureController+<FetchTextures>d__18.MoveNext () (at Assets/Scripts/MainScripts/DCL/Components/Avatar/FacialFeatureController.cs:104)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Scripting/Coroutines.cs:17)

2. Assets/Scripts/MainScripts/DCL/Components/Avatar/BodyShapeController.cs:69

NullReferenceException: Object reference not set to an instance of an object
BodyShapeController.SetupEyebrows (UnityEngine.Material material, UnityEngine.Texture texture, UnityEngine.Color color) (at Assets/Scripts/MainScripts/DCL/Components/Avatar/BodyShapeController.cs:69)
FacialFeatureController.PrepareWearable () (at Assets/Scripts/MainScripts/DCL/Components/Avatar/FacialFeatureController.cs:57)
FacialFeatureController+<FetchTextures>d__18.MoveNext () (at Assets/Scripts/MainScripts/DCL/Components/Avatar/FacialFeatureController.cs:104)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Scripting/Coroutines.cs:17)

3. Assets/Scripts/MainScripts/DCL/Components/Avatar/BodyShapeController.cs:91

NullReferenceException: Object reference not set to an instance of an object
BodyShapeController.SetupMouth (UnityEngine.Material material, UnityEngine.Texture texture, UnityEngine.Color color) (at Assets/Scripts/MainScripts/DCL/Components/Avatar/BodyShapeController.cs:91)
FacialFeatureController.PrepareWearable () (at Assets/Scripts/MainScripts/DCL/Components/Avatar/FacialFeatureController.cs:60)
FacialFeatureController+<FetchTextures>d__18.MoveNext () (at Assets/Scripts/MainScripts/DCL/Components/Avatar/FacialFeatureController.cs:104)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Scripting/Coroutines.cs:17)

4. Assets/Scripts/MainScripts/DCL/Components/Avatar/WearableController.cs:67

NullReferenceException: Object reference not set to an instance of an object
WearableController+<>c__DisplayClass18_0.<Load>g__OnSuccessWrapper|0 (UnityEngine.GameObject gameObject) (at Assets/Scripts/MainScripts/DCL/Components/Avatar/WearableController.cs:67)
DCL.Components.RendereableAssetLoadHelper.OnSuccessWrapper (DCL.Asset_WithPoolableContainer loadedAsset, System.Action`1[T] OnSuccess) (at Assets/Scripts/MainScripts/DCL/Components/LoadableShapes/LoadWrapper/RendereableAssetLoadHelper.cs:194)
DCL.Components.RendereableAssetLoadHelper+<>c__DisplayClass28_0.<LoadAssetBundle>b__0 (DCL.Asset_AB_GameObject x) (at Assets/Scripts/MainScripts/DCL/Components/LoadableShapes/LoadWrapper/RendereableAssetLoadHelper.cs:138)
DCL.AssetPromise`1[AssetType].CallAndClearEvents (System.Boolean isSuccess) (at Assets/Scripts/MainScripts/DCL/Controllers/AssetManager/Common/AssetPromise.cs:77)
DCL.AssetPromise`1[AssetType].OnReuseFinished () (at Assets/Scripts/MainScripts/DCL/Controllers/AssetManager/Common/AssetPromise.cs:135)
DCL.Asset_AB_GameObject.Show (System.Action OnFinish) (at Assets/Scripts/MainScripts/DCL/Controllers/AssetManager/AssetBundles/AB_GameObject/Asset_AB_GameObject.cs:29)
DCL.AssetPromise_AB_GameObject.OnReuse (System.Action OnSuccess) (at Assets/Scripts/MainScripts/DCL/Controllers/AssetManager/AssetBundles/AB_GameObject/AssetPromise_AB_GameObject.cs:50)
DCL.AssetPromise`1[AssetType].Load () (at Assets/Scripts/MainScripts/DCL/Controllers/AssetManager/Common/AssetPromise.cs:98)
DCL.AssetPromiseKeeper`3+<LoadPromisesList>d__25[AssetType,AssetLibraryType,AssetPromiseType].MoveNext () (at Assets/Scripts/MainScripts/DCL/Controllers/AssetManager/Common/AssetPromiseKeeper.cs:308)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Scripting/Coroutines.cs:17)