Test

fix![zarr-metadata]: define JSONValue type, and narrow object annotations to use JSONValue #7622

Job	Run time
doctests	53s
Benchmark smoke test	9m 38s
py=3.14-upstream	8m 9s
os=ubuntu-latest, py=3.14, deps=optional	3m 57s
os=ubuntu-latest, py=3.13, deps=minimal	7m 46s
os=ubuntu-latest, py=3.14, deps=minimal	4m 19s
os=windows-latest, py=3.12, deps=optional	11m 36s
os=ubuntu-latest, py=3.12, deps=optional	6m 44s
os=macos-latest, py=3.12, deps=optional	7m 22s
os=ubuntu-latest, py=3.13, deps=optional	8m 14s
os=macos-latest, py=3.14, deps=optional	5m 3s
os=windows-latest, py=3.14, deps=optional	9m 29s
py=3.12-min_deps	5m 24s
os=ubuntu-latest, py=3.12, deps=minimal	7m 2s
Test complete	2s
	1h 35m 38s

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