FIX: drop(index=[pd.NA]) fails for Arrow-backed index (#63304) #30592

Job	Run time
Linux-Musl	14m 59s
Pyodide build	23m 7s
Linux-32-bit	19m 6s
python-dev (ubuntu-24.04)	12m 40s
python-dev (macos-15)	27m 39s
python-dev (macos-15-intel)	18m 29s
python-dev (windows-2025)	15m 54s
windows-2025 actions-313.yaml	40m 55s
macos-15-intel actions-311.yaml	43m 45s
macos-15-intel actions-312.yaml	44m 16s
macos-15 actions-312.yaml	44m 12s
macos-15-intel actions-313.yaml	27m 34s
windows-2025 actions-311.yaml	36m 28s
macos-15 actions-311.yaml	53m 2s
windows-2025 actions-312.yaml	38m 27s
macos-15 actions-313.yaml	44m 39s
Without PyArrow	21m 6s
ubuntu-24.04 actions-313.yaml	42m 31s
Numpy Dev	17m 53s
Pyarrow Nightly	20m 49s
ubuntu-24.04-arm actions-311.yaml	38m 47s
Locale: zh_CN	28m 55s
ubuntu-24.04 actions-311.yaml	40m 28s
Freethreading	13m 6s
PANDAS_FUTURE_INFER_STRING=0	41m 54s
Minimum Versions	24m 45s
ubuntu-24.04 actions-312.yaml	44m 19s
Locale: it_IT	29m 12s
PANDAS_FUTURE_PYTHON_SCALARS=1	44m 19s
ubuntu-24.04-arm actions-312.yaml	38m 4s
ubuntu-24.04-arm actions-313.yaml	37m 56s
Downstream Compat	6m 31s
	16h 35m 47s

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