WebGPU errors when Spatial-Temporal Post-Processing upscaling is used

Steps to reproduce:

1. Change the URP render scale to something less than 1.0
2. Change the Upscaling Filter method to Spatial-Temporal Post-Processing
3. Change the Web Player graphics API to WebGPU
4. Build and run for Web

Actual results: 

The render is black with errors in the console

Expected results: 

Reproducible with versions: 

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): 

Notes:

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