discrete pluralizer for lib.esnext.temporal unit unions #35425

Job	Run time
coverage	10m 30s
knip	32s
typecheck	44s
lint	56s
smoke	59s
Test Node 24 on ubuntu-latest	8m 37s
format	27s
Test Node 14 on ubuntu-latest	12m 21s
browser-integration	1m 24s
Test Node lts/* on ubuntu-latest with --no-bundle	10m 54s
misc	29s
self-check	55s
package-size	1m 36s
Test Node 14 on windows-latest	15m 15s
Test Node 24 on windows-latest	11m 19s
baselines	9m 16s
required	4s
	1h 26m 18s

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