feat: `aligned_axis_key_join` for on-axis key joining #2702

Job	Run time
build	25s
get-environments	7s
test (hatch-test.min, 3.12, dask_distributed)	2m 5s
test (hatch-test.pre, 3.14, --strict-warnings, zarr_io)	12m 8s
test (hatch-test.pre, 3.14, --strict-warnings, not zarr_io)	10m 40s
test (hatch-test.min, 3.12, zarr_io)	23m 4s
test (hatch-test.stable, 3.14, --strict-warnings, zarr_io)	14m 33s
test (hatch-test.stable, 3.14, --strict-warnings, not zarr_io)	11m 28s
test (hatch-test.array_api, 3.14, not zarr_io)	1m 34s
test (hatch-test.array_api, 3.14, zarr_io)	46s
test (hatch-test.min, 3.12, not zarr_io)	17m 18s
test (hatch-test.pre, 3.14, --strict-warnings, dask_distributed)	2m 29s
test (hatch-test.stable, 3.14, --strict-warnings, dask_distributed)	2m 10s
check	5s
	1h 38m 52s

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