BUG: Fix GroupBy aggregate coersion of outputs inconsistency for pyarrow dtypes #23931

Job	Run time
Linux-Musl	15m 14s
python-dev	-1s
Linux-32-bit	18m 41s
Pyodide build	23m 36s
macos-13 actions-313.yaml	43m 32s
macos-14 actions-312.yaml	31m 57s
macos-13 actions-312.yaml	51m 0s
windows-latest actions-311.yaml	36m 15s
macos-14 actions-310.yaml	44m 8s
windows-latest actions-313.yaml	44m 57s
macos-13 actions-311.yaml	57m 49s
macos-14 actions-311.yaml	36m 55s
macos-14 actions-313.yaml	33m 58s
windows-latest actions-310.yaml	35m 32s
windows-latest actions-312.yaml	36m 55s
macos-13 actions-310.yaml	39m 20s
Minimum Versions	24m 52s
ubuntu-24.04-arm actions-310.yaml	37m 47s
Locale: it_IT	24m 38s
Locale: zh_CN	24m 23s
Pypy	1m 42s
Future infer strings	47m 23s
ubuntu-24.04-arm actions-311.yaml	35m 26s
Downstream Compat	8m 15s
ubuntu-24.04 actions-311.yaml	44m 17s
Future infer strings (without pyarrow)	39m 3s
ubuntu-24.04 actions-310.yaml	50m 27s
Pyarrow Nightly	20m 45s
Numpy Dev	17m 8s
ubuntu-24.04-arm actions-313.yaml	35m 26s
ubuntu-24.04-arm actions-312.yaml	36m 35s
Freethreading	21m 39s
ubuntu-24.04 actions-313.yaml	52m 10s
ubuntu-24.04 actions-312.yaml	44m 59s
	18h 36m 43s

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