Backport PR #5112 on branch yt-4.4.x (BUG: fix NaNs in off-center FRB slices from ds.r) #8549

Job	Run time
unit tests: py3.13 on macos-latest (pytest)	12m 24s
unit tests: py3.10.3 on ubuntu-20.04 (pytest)	10m 49s
answer tests: py3.10 on ubuntu-latest (nose)	14m 8s
unit tests: py3.10 on ubuntu-latest (nose)	14m 45s
unit tests: py3.13 on ubuntu-latest (pytest)	18m 21s
unit tests: py3.x on ubuntu-latest (pytest)	10m 30s
unit tests: py3.13 on windows-latest (pytest)	17m 34s
Image tests	6m 30s
	1h 45m 1s

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