Fix #61072: inconsistent fullmatch results with regex alternation #23518

Job	Run time
Pyodide build	25m 24s
Linux-Musl	15m 13s
macos-13 actions-312.yaml	44m 40s
macos-13 actions-311.yaml	44m 10s
Linux-32-bit	18m 18s
macos-13 actions-313.yaml	44m 4s
macos-14 actions-312.yaml	17m 3s
macos-14 actions-313.yaml	17m 6s
macos-13 actions-310.yaml	44m 5s
windows-latest actions-312.yaml	43m 23s
windows-latest actions-313.yaml	43m 23s
windows-latest actions-311.yaml	43m 23s
macos-14 actions-310.yaml	19m 5s
Locale: zh_CN	43m 40s
Minimum Versions	43m 39s
ubuntu-24.04-arm actions-313.yaml	48m 23s
ubuntu-24.04-arm actions-310.yaml	43m 41s
windows-latest actions-310.yaml	43m 23s
ubuntu-24.04 actions-312.yaml	43m 38s
macos-14 actions-311.yaml	17m 28s
python-dev	0s
Future infer strings	43m 39s
ubuntu-24.04-arm actions-311.yaml	43m 44s
ubuntu-24.04 actions-310.yaml	43m 38s
ubuntu-24.04-arm actions-312.yaml	43m 41s
Future infer strings (without pyarrow)	43m 39s
Locale: it_IT	43m 38s
Freethreading	20m 49s
Numpy Dev	16m 22s
Pyarrow Nightly	19m 44s
Downstream Compat	5m 18s
Pypy	1m 19s
ubuntu-24.04 actions-313.yaml	43m 23s
ubuntu-24.04 actions-311.yaml	43m 40s
	18h 35m 43s

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