WebGPU errors when CoreCopy shader is used to copy an MSAA texture

Steps to reproduce:

1. Open attached project
2. Change graphics API to WebGPU in player settings
3. build and run for Web

Actual results: 
Render fails

Expected results: 

Squared rendered with red outline

Reproducible with versions: 

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): 

Notes:

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