BUG: is_*_array returns true on empty object dtype #21629

Job	Run time
Pyodide build	25m 39s
Linux-32-bit	18m 55s
Linux-Musl	20m 16s
python-freethreading	25m 9s
python-dev (macOS-13)	20m 6s
python-dev (macOS-14)	9m 21s
python-dev (ubuntu-22.04)	21m 59s
python-dev (windows-latest)	24m 53s
macos-13 actions-310.yaml	41m 21s
macos-13 actions-311.yaml	27m 36s
macos-13 actions-312.yaml	29m 41s
macos-14 actions-310.yaml	23m 44s
macos-14 actions-311.yaml	19m 29s
macos-14 actions-312.yaml	17m 45s
windows-latest actions-311.yaml	37m 45s
windows-latest actions-312.yaml	46m 36s
windows-latest actions-310.yaml	35m 51s
Minimum Versions	24m 1s
Locale: zh_CN	26m 52s
Locale: it_IT	25m 58s
Future infer strings (without pyarrow)	40m 0s
Downstream Compat	6m 47s
Numpy Dev	18m 39s
Pyarrow Nightly	22m 6s
Future infer strings	49m 5s
Pypy	1m 38s
ubuntu-22.04 actions-310.yaml	47m 22s
ubuntu-22.04 actions-312.yaml	47m 33s
ubuntu-22.04 actions-311.yaml	43m 54s
ubuntu-24.04-arm actions-311.yaml	33m 55s
ubuntu-24.04-arm actions-312.yaml	38m 40s
ubuntu-24.04-arm actions-310.yaml	2m 45s
	14h 35m 21s

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