Tests

add melt support for dask-expr API #1220

Job	Run time
Event File	3s
test (windows-latest, 3.9)	22m 2s
test (windows-latest, 3.10)	23m 49s
test (windows-latest, 3.11)	24m 39s
test (windows-latest, 3.12)	26m 10s
test (ubuntu-latest, 3.9)	15m 32s
test (ubuntu-latest, 3.10)	17m 25s
test (ubuntu-latest, 3.11)	16m 35s
test (ubuntu-latest, 3.12)	19m 38s
test (macos-14, 3.12)	16m 31s
test (ubuntu-latest, mindeps-array)	3m 26s
test (ubuntu-latest, mindeps-dataframe)	13m 54s
test (ubuntu-latest, mindeps-distributed)	3m 25s
test (ubuntu-latest, mindeps-non-optional)	2m 19s
test (ubuntu-latest, mindeps-optional)	17m 12s
test (ubuntu-latest, 3.12, pandas-nightly)	19m 35s
	4h 2m 15s

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