Nearest-Neighbor upscaling filter is ignored due to final post-processing pass dependency

Steps to reproduce:

1. Create an empty URP project
2. In the URP Asset > Quality parameters, set Render Scale to any value below 1 and the Upscaling Filter to Nearest-Neighbor
3. Open the Frame Debugger and check the pass contents

Actual results: The upscaling uses the UberPost shader (Blit Post Processing pass), which only implements linear sampling and doesn't implement point sampling.

Expected results: The upscaling happens with point sampling during the correct post-processing stage (either UberPost or FinalPost).

Reproducible with versions: 6000.4.0a2, 6000.4.0f1, 6000.5.0a9, 6000.6.0a1

Not reproducible with versions: 6000.4.0a1

Can’t test with versions: 

Tested on (OS): Windows 11

Notes: