Missing root mesh of instances in gpu picking list

Questions
1

repro: https://playground.babylonjs.com/#XJKQOC#19

Not pushing the root mesh into the gpu picking list throws console error Uncaught TypeError: Cannot read properties of undefined (reading 'getEffect'). Seems like a stricter chk is needed? or a console warn?

2

hum..this is bad..Let me check that

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3

Here we are: Add warning message when core mesh is not in the GPU picking list by deltakosh · Pull Request #16512 · BabylonJS/Babylon.js

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