feature #49580: support new-style float_format string in to_csv #23949

Job	Run time
Linux-32-bit	19m 3s
Linux-Musl	15m 28s
python-dev	0s
Pyodide build	23m 30s
macos-14 actions-310.yaml	30m 33s
macos-13 actions-310.yaml	37m 41s
windows-latest actions-312.yaml	37m 49s
macos-14 actions-313.yaml	28m 38s
macos-14 actions-311.yaml	22m 58s
macos-13 actions-312.yaml	33m 57s
windows-latest actions-310.yaml	35m 26s
macos-14 actions-312.yaml	25m 4s
windows-latest actions-311.yaml	37m 20s
macos-13 actions-313.yaml	49m 29s
windows-latest actions-313.yaml	43m 40s
macos-13 actions-311.yaml	41m 49s
ubuntu-24.04 actions-312.yaml	44m 41s
Pypy	1m 41s
Future infer strings	47m 14s
ubuntu-24.04-arm actions-312.yaml	35m 26s
Downstream Compat	6m 4s
ubuntu-24.04-arm actions-313.yaml	36m 15s
Locale: zh_CN	25m 19s
Minimum Versions	23m 45s
ubuntu-24.04 actions-313.yaml	48m 20s
ubuntu-24.04-arm actions-310.yaml	36m 28s
ubuntu-24.04 actions-310.yaml	49m 32s
ubuntu-24.04 actions-311.yaml	46m 48s
Freethreading	21m 40s
Locale: it_IT	25m 8s
Future infer strings (without pyarrow)	39m 11s
Numpy Dev	17m 4s
ubuntu-24.04-arm actions-311.yaml	35m 53s
Pyarrow Nightly	20m 22s
	17h 23m 16s

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