[FIX] Unset materialAsset on model component when material is set specifically (#1792)
[FIX] Unset materialAsset on model component when material is set specifically (#1792)

* unset materialAsset on model when material is set specifically

* Lint fix

Co-authored-by: Will Eastcott <37d41699bdee4fcb969ca499eb0f8b82c60d59cc@playcanvas.com>

playcanvas/engine,MicroWorldwide/PlayCanvas,aidinabedi/playcanvas-engine,aidinabedi/playcanvas-engine,MicroWorldwide/PlayCanvas,playcanvas/engine,sereepap2029/playcanvas,sereepap2029/playcanvas,sereepap2029/playcanvas