BUG: Fix return type of loc/iloc #22261

Job	Run time
Pyodide build	19m 42s
Linux-Musl	16m 37s
Linux-32-bit	18m 49s
python-dev (macOS-13)	19m 42s
python-dev (macOS-14)	12m 36s
python-dev (ubuntu-22.04)	19m 46s
python-dev (windows-latest)	19m 40s
python-freethreading	19m 42s
macos-13 actions-310.yaml	20m 13s
macos-13 actions-311.yaml	20m 17s
macos-13 actions-312.yaml	20m 15s
macos-14 actions-310.yaml	19m 55s
macos-14 actions-311.yaml	20m 2s
macos-14 actions-312.yaml	20m 3s
windows-latest actions-311.yaml	19m 41s
windows-latest actions-312.yaml	19m 39s
windows-latest actions-310.yaml	19m 39s
Minimum Versions	19m 56s
Future infer strings (without pyarrow)	24m 27s
Locale: zh_CN	19m 56s
Downstream Compat	6m 45s
Locale: it_IT	19m 55s
Pyarrow Nightly	19m 43s
Numpy Dev	17m 30s
Future infer strings	24m 29s
Pypy	1m 43s
ubuntu-22.04 actions-310.yaml	24m 29s
ubuntu-22.04 actions-311.yaml	24m 30s
ubuntu-22.04 actions-312.yaml	24m 27s
ubuntu-24.04-arm actions-311.yaml	24m 27s
ubuntu-24.04-arm actions-312.yaml	24m 27s
ubuntu-24.04-arm actions-310.yaml	24m 28s
	10h 27m 30s

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