Resampling tweaks and updated docs #14812

Job	Run time
Ubuntu Build release	12m 41s
Ubuntu Build debug	4m 11s
Ubuntu Build asan	5m 32s
Ubuntu Build msan	6m 50s
Ubuntu Build tsan	4m 32s
Ubuntu Build scalar	2m 58s
Ubuntu Build lowprecision	12m 5s
Ubuntu Build coverage	52s
Ubuntu Build release-nojpeg	3m 45s
Ubuntu Build release-lcms2	4m 1s
Ubuntu Build release-system-lcms2	3m 44s
Ubuntu Build release:arm64	14m 14s
Ubuntu Build release:arm64-lowprecision	16m 14s
Ubuntu Build release:minimal	3m 57s
Ubuntu Build release:gcc	3m 27s
Ubuntu Build release:gcc-old	3m 11s
Ubuntu Build release:gcc-old-old	3m 30s
Ubuntu Build release:clang-old	3m 40s
Ubuntu Build release:clang-old-old	3m 33s
MacOS Build release:osx	2m 54s
MacOS Build release:osx-15	2m 44s
	1h 58m 35s

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