fix: set newline='' on TextIOWrapper in stdio_server to prevent Windows CRLF corruption #2088

Job	Run time
checks / readme-snippets	10s
checks / pre-commit	36s
checks / test (3.10, lowest-direct, windows-latest)	3m 13s
checks / test (3.10, locked, ubuntu-latest)	1m 0s
checks / test (3.10, locked, windows-latest)	2m 55s
checks / test (3.13, lowest-direct, ubuntu-latest)	58s
checks / test (3.11, lowest-direct, windows-latest)	3m 5s
checks / test (3.14, lowest-direct, windows-latest)	2m 34s
checks / test (3.12, lowest-direct, windows-latest)	3m 47s
checks / test (3.10, lowest-direct, ubuntu-latest)	56s
checks / test (3.11, locked, windows-latest)	2m 51s
checks / test (3.13, locked, windows-latest)	2m 1s
checks / test (3.12, lowest-direct, ubuntu-latest)	59s
checks / test (3.13, lowest-direct, windows-latest)	2m 45s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 27s
checks / test (3.13, locked, ubuntu-latest)	52s
checks / test (3.11, locked, ubuntu-latest)	52s
checks / test (3.12, locked, windows-latest)	3m 36s
checks / test (3.14, locked, ubuntu-latest)	2m 27s
checks / test (3.11, lowest-direct, ubuntu-latest)	56s
checks / test (3.14, locked, windows-latest)	3m 31s
checks / test (3.12, locked, ubuntu-latest)	1m 4s
all-green	4s
	42m 39s

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