BUG: Index allows one item to be `list` among others that are not #23927

Job	Run time
Linux-32-bit	2m 23s
python-dev	-1s
Pyodide build	2m 36s
Linux-Musl	2m 22s
macos-14 actions-313.yaml	2m 37s
macos-14 actions-311.yaml	2m 38s
windows-latest actions-310.yaml	2m 19s
windows-latest actions-312.yaml	2m 19s
macos-13 actions-311.yaml	2m 40s
macos-13 actions-312.yaml	2m 40s
windows-latest actions-311.yaml	2m 18s
macos-14 actions-312.yaml	2m 38s
macos-13 actions-310.yaml	2m 41s
windows-latest actions-313.yaml	2m 20s
macos-13 actions-313.yaml	2m 39s
ubuntu-24.04 actions-310.yaml	2m 37s
macos-14 actions-310.yaml	2m 40s
Downstream Compat	2m 38s
ubuntu-24.04-arm actions-312.yaml	2m 35s
Minimum Versions	2m 36s
Future infer strings	2m 36s
Locale: it_IT	2m 36s
ubuntu-24.04 actions-312.yaml	2m 36s
Pyarrow Nightly	2m 36s
Future infer strings (without pyarrow)	2m 36s
ubuntu-24.04 actions-313.yaml	2m 35s
ubuntu-24.04-arm actions-310.yaml	2m 37s
ubuntu-24.04-arm actions-311.yaml	2m 35s
Pypy	1m 16s
ubuntu-24.04 actions-311.yaml	2m 36s
ubuntu-24.04-arm actions-313.yaml	2m 46s
Locale: zh_CN	2m 36s
Numpy Dev	2m 40s
Freethreading	2m 36s
	1h 23m 32s

Provide feedback