fix: preserve stdio streams in server transport #2493

Job	Run time
checks / readme-snippets	10s
checks / pre-commit	34s
checks / test (3.10, locked, ubuntu-latest)	52s
checks / test (3.10, locked, windows-latest)	3m 9s
checks / test (3.12, lowest-direct, windows-latest)	1m 33s
checks / test (3.11, locked, windows-latest)	2m 42s
checks / test (3.11, lowest-direct, windows-latest)	1m 22s
checks / test (3.12, lowest-direct, ubuntu-latest)	54s
checks / test (3.12, locked, ubuntu-latest)	52s
checks / test (3.11, locked, ubuntu-latest)	45s
checks / test (3.12, locked, windows-latest)	1m 28s
checks / test (3.11, lowest-direct, ubuntu-latest)	51s
checks / test (3.10, lowest-direct, ubuntu-latest)	49s
checks / test (3.14, lowest-direct, ubuntu-latest)	49s
checks / test (3.13, lowest-direct, ubuntu-latest)	58s
checks / test (3.13, locked, ubuntu-latest)	47s
checks / test (3.14, lowest-direct, windows-latest)	1m 11s
checks / test (3.14, locked, ubuntu-latest)	1m 52s
checks / test (3.13, locked, windows-latest)	1m 13s
checks / test (3.14, locked, windows-latest)	2m 0s
checks / test (3.10, lowest-direct, windows-latest)	1m 20s
checks / test (3.13, lowest-direct, windows-latest)	1m 31s
all-green	2s
	27m 44s

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