NO-SNOW: Refactor test_np_unique into a class #20196

Job	Run time
Check linting	2m 56s
Type Checking	47s
Build Doc	2m 1s
Build Wheel File	19s
Test Local Testing Module py-ubuntu-latest-3.13	7m 12s
Test AST Encoding py-ubuntu-latest-3.11-aws	2m 13s
Test py-ubuntu-latest-64-cores-3.13-aws	22m 50s
Test py-ubuntu-latest-64-cores-3.12-azure	25m 3s
Test py-ubuntu-latest-64-cores-3.9-aws	28m 17s
Test py-ubuntu-latest-64-cores-3.12-gcp	37m 27s
Test py-windows-latest-64-cores-3.13-gcp	32m 56s
Test py-macos-latest-3.12-azure	31m 19s
Doctest AST (phase0) py-macos-latest-3.9	21m 41s
Test modin extra without pandas extra py-macos-3.9-aws.	3m 5s
Test modin-ubuntu-latest-64-cores-3.10-azure	29m 25s
Test modin-macos-latest-3.9-aws	29m 5s
Test AST enabled (phase0) py-ubuntu-latest-3.13	2h 27m 54s
Test modin-windows-latest-64-cores-3.11-gcp	49m 45s
Test modin-ubuntu-latest-64-cores-3.12-aws	30m 6s
Combine coverage	1m 21s
	8h 25m 42s

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