fix: use fast-array-utils’ threadsafe njit #1607

Job	Run time
get-environments	8s
build	22s
test (hatch-test.stable, 3.14)	6m 43s
test (hatch-test.few-extras, 3.14)	6m 1s
test (hatch-test.pre, coverage, 3.14)	7m 16s
test (hatch-test.low-vers, coverage, 3.12)	9m 57s
check	4s
	30m 31s

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