SpriteManager not included in AssetContainer

[kzhsw]

Version: 8.47.0
Engine: any
Browser: any

Steps to reproduce:

1. Open the playground
   https://playground.babylonjs.com/#YCY2IL#2543
2. Open console and check logs

Expected:
removeAllFromScene (empty array)
addAllToScene (array with exactly one SpriteManager)
removeAllFromScene (empty array)

Actual:

[Deltakosh]

cc @AlitarSemiramis (please bear with us as we are heads down closing up babylon v9)

[AlitarSemiramis]

I’ll look at it, thanks for the report!

[AlitarSemiramis]

PR is merged for this, thank you @kzhsw for reporting it!

Add sprites to the AssetContainer by VicenteCartas · Pull Request #17727 · BabylonJS/Babylon.js