BUG: Fix inconsistent returned objects when applying groupby aggregations #23548

Job	Run time
python-dev	0s
Linux-Musl	15m 56s
Linux-32-bit	18m 28s
macos-13 actions-311.yaml	59m 2s
Pyodide build	25m 30s
macos-13 actions-313.yaml	1h 13m 21s
macos-14 actions-311.yaml	32m 33s
macos-14 actions-313.yaml	25m 35s
macos-13 actions-310.yaml	1h 0m 29s
windows-latest actions-313.yaml	1h 27m 14s
macos-13 actions-312.yaml	1h 5m 33s
macos-14 actions-310.yaml	27m 31s
ubuntu-24.04-arm actions-311.yaml	56m 55s
windows-latest actions-312.yaml	1h 17m 1s
macos-14 actions-312.yaml	23m 35s
windows-latest actions-310.yaml	1h 18m 25s
windows-latest actions-311.yaml	1h 18m 59s
Locale: zh_CN	1h 3m 58s
Freethreading	21m 0s
Pypy	2m 31s
Pyarrow Nightly	19m 55s
ubuntu-24.04 actions-310.yaml	1h 25m 32s
Future infer strings (without pyarrow)	1h 19m 50s
Locale: it_IT	1h 3m 34s
ubuntu-24.04 actions-313.yaml	1h 29m 7s
ubuntu-24.04 actions-312.yaml	1h 23m 0s
Future infer strings	1h 25m 48s
Numpy Dev	16m 48s
ubuntu-24.04 actions-311.yaml	1h 24m 43s
ubuntu-24.04-arm actions-310.yaml	59m 1s
ubuntu-24.04-arm actions-312.yaml	57m 43s
Minimum Versions	49m 55s
ubuntu-24.04-arm actions-313.yaml	1h 8m 12s
Downstream Compat	6m 14s
	1d 5h 2m 58s

Provide feedback