FIX-#7375: Fix Series.duplicated dropping name #16115

Job	Run time
execution-filter	5s
python-filter	1s
lint (flake8)	14s
lint (mypy)	2m 17s
Test API, headers and no-engine mode	1m 46s
test-asv-benchmarks	21s
test-clean-install-ubuntu	3m 1s
test-ubuntu (engine unidist ${{ matrix.unidist-backend }}, python ${{ matrix.python-version }})	0s
test-ubuntu (engine python, python 3.9, group_1)	21m 20s
test-clean-install-windows	2m 26s
test-windows (engine python, python 3.9, group_1)	32m 54s
Test BaseOnPython execution, Python 3.9"	17m 5s
test experimental	8m 4s
test-internals	6m 50s
test-native-dataframe-mode python ${{ matrix.python-version }})	0s
test-spreadsheet (engine ray, python 3.9)	2m 7s
test-spreadsheet (engine dask, python 3.9)	1m 58s
test-ubuntu-sanity (engine ray, python 3.9)	17m 43s
test-ubuntu-sanity (engine dask, python 3.9)	40m 10s
test-ubuntu-sanity (engine unidist, python 3.9)	16m 15s
test-windows-sanity (engine ray, python 3.9)	23m 4s
test-windows-sanity (engine dask, python 3.9)	29m 57s
test-windows-sanity (engine unidist, python 3.9)	26m 35s
merge-coverage-artifacts	6s
upload-coverage	29s
	4h 14m 48s

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