BUG: Fix return type of loc/iloc #23886

Job	Run time
Linux-32-bit	18m 37s
Pyodide build	23m 21s
Linux-Musl	15m 20s
python-dev	0s
macos-14 actions-313.yaml	26m 27s
macos-14 actions-312.yaml	25m 11s
windows-latest actions-310.yaml	34m 26s
macos-14 actions-310.yaml	26m 20s
windows-latest actions-313.yaml	47m 1s
macos-14 actions-311.yaml	23m 33s
macos-13 actions-312.yaml	23m 56s
windows-latest actions-311.yaml	33m 34s
windows-latest actions-312.yaml	36m 53s
macos-13 actions-311.yaml	22m 16s
macos-13 actions-313.yaml	33m 47s
macos-13 actions-310.yaml	27m 14s
ubuntu-24.04-arm actions-311.yaml	34m 29s
Locale: zh_CN	23m 46s
ubuntu-24.04 actions-311.yaml	41m 55s
Pypy	1m 29s
ubuntu-24.04 actions-310.yaml	46m 28s
ubuntu-24.04-arm actions-310.yaml	35m 6s
Numpy Dev	16m 32s
Freethreading	21m 22s
Minimum Versions	23m 19s
Locale: it_IT	23m 16s
ubuntu-24.04-arm actions-313.yaml	36m 7s
ubuntu-24.04 actions-313.yaml	47m 31s
ubuntu-24.04 actions-312.yaml	43m 18s
Future infer strings	44m 55s
Downstream Compat	5m 10s
Pyarrow Nightly	20m 25s
ubuntu-24.04-arm actions-312.yaml	35m 0s
Future infer strings (without pyarrow)	38m 47s
	15h 56m 51s

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