Migrate `DataTree` to the new IR #3515

Job	Run time
test-osx (check-py38-cover)	6m 14s
test-osx (check-py310-cover)	9m 31s
test-win (3.9)	14m 34s
test-osx (check-py310-nocover)	12m 6s
test-win (3.10)	15m 15s
test (check-whole-repo-tests)	3m 34s
test-osx (check-py310-niche)	7m 8s
test-win (3.11)	13m 43s
test (lint)	54s
test-osx (check-py311-cover)	9m 35s
test-win (3.11, x86)	13m 36s
test (check-format)	45s
test (check-coverage)	18m 52s
test (check-conjecture-coverage)	2m 50s
test (check-py38-cover)	5m 37s
test (check-py38-nocover)	7m 58s
test (check-py38-niche)	3m 37s
test (check-pypy38-cover)	5m 28s
test (check-py39-cover)	5m 21s
test (check-pypy39-cover)	5m 44s
test (check-py310-cover)	5m 6s
test (check-py310-nocover)	3h 37m 24s
test (check-py310-niche)	3m 22s
test (check-pypy310-cover)	5m 43s
test (check-py311-cover)	4m 32s
test (check-py311-nocover)	5m 22s
test (check-py311-niche)	3m 34s
test (check-py312-cover)	6m 9s
test (check-py312-nocover)	5m 34s
test (check-py312-niche)	3m 50s
test (check-quality)	3m 42s
test (check-py39-nose)	1m 8s
test (check-py39-pytest46)	1m 59s
test (check-py39-pytest54)	1m 49s
test (check-pytest62)	2m 0s
test (check-django42)	1m 30s
test (check-django41)	1m 37s
test (check-django32)	1m 39s
test (check-pandas20)	1m 12s
test (check-pandas15)	1m 19s
test (check-pandas14)	1m 10s
test (check-pandas13)	1m 9s
test (check-pandas12)	1m 15s
test (check-pandas11)	1m 8s
test (check-py38-oldestnumpy)	1m 58s
deploy	1s
	7h 27m 34s

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