Depth of Field blur is inconsistent with r.ScreenPercentage == 100 (Dynamic resolution)

Depth of Field, with "r.DOF.Recombine.Quality = 0" will adjust the size of the depth in focus based on screen percentage.

This might be related to over-fitting from the tile classification, because each tile covers more area of the final image.

Also found in //UE5/Release-5.5, CL: 37356098

1. Download the Licensee's test project (see addl info URL)
2. Launch the project with the "-game" command-line argument
3. Execute the console command "sg.PostProcessQuality 1"
4. Observe that the gold ball is in focus.
5. Execute the console command "r.ScreenPercentage 70"
6. Observe that the gold ball is not in focus
7. Execute the console command "r.ScreenPercentage 60"
8. Observe that the gold ball is in focus again.