Fix stdio server newline translation on Windows #2422

Job	Run time
checks / pre-commit	32s
checks / readme-snippets	11s
checks / test (3.10, lowest-direct, windows-latest)	2m 46s
checks / test (3.11, lowest-direct, windows-latest)	3m 0s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 2s
checks / test (3.10, locked, windows-latest)	3m 1s
checks / test (3.11, locked, windows-latest)	3m 23s
checks / test (3.11, locked, ubuntu-latest)	1m 1s
checks / test (3.12, locked, windows-latest)	3m 37s
checks / test (3.12, lowest-direct, windows-latest)	3m 30s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 32s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 8s
checks / test (3.12, locked, ubuntu-latest)	1m 9s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 15s
checks / test (3.10, locked, ubuntu-latest)	1m 1s
checks / test (3.13, locked, ubuntu-latest)	54s
checks / test (3.13, lowest-direct, windows-latest)	3m 6s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 3s
checks / test (3.13, locked, windows-latest)	2m 36s
checks / test (3.14, locked, windows-latest)	3m 5s
checks / test (3.14, locked, ubuntu-latest)	2m 0s
checks / test (3.14, lowest-direct, windows-latest)	2m 47s
all-green	5s
	43m 44s

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