Test

fix: Implement Array.len (fixes #3740) #6534

Job	Run time
py=3.11-min_deps	16m 37s
py=3.13-upstream	19m 32s
doctests	56s
os=ubuntu-latest, py=3.12, deps=minimal	15m 48s
os=ubuntu-latest, py=3.11, deps=minimal	16m 0s
os=ubuntu-latest, py=3.13, deps=minimal	14m 34s
os=macos-latest, py=3.13, deps=optional	16m 52s
os=windows-latest, py=3.13, deps=optional	21m 22s
os=macos-latest, py=3.11, deps=optional	11m 49s
os=ubuntu-latest, py=3.13, deps=optional	17m 48s
os=windows-latest, py=3.11, deps=optional	23m 6s
os=ubuntu-latest, py=3.11, deps=optional	17m 38s
os=ubuntu-latest, py=3.12, deps=optional	17m 9s
Test complete	3s
	3h 29m 14s

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