fix: close all memory stream ends in client transport cleanup #1442

Job	Run time
checks / pre-commit	38s
checks / readme-snippets	12s
checks / test (3.10, lowest-direct, ubuntu-latest)	47s
checks / test (3.10, locked, windows-latest)	2m 23s
checks / test (3.11, locked, ubuntu-latest)	48s
checks / test (3.11, lowest-direct, windows-latest)	2m 51s
checks / test (3.10, lowest-direct, windows-latest)	2m 54s
checks / test (3.11, lowest-direct, ubuntu-latest)	44s
checks / test (3.11, locked, windows-latest)	2m 26s
checks / test (3.10, locked, ubuntu-latest)	51s
checks / test (3.13, lowest-direct, ubuntu-latest)	46s
checks / test (3.14, lowest-direct, windows-latest)	2m 55s
checks / test (3.12, locked, windows-latest)	3m 40s
checks / test (3.12, lowest-direct, ubuntu-latest)	53s
checks / test (3.13, lowest-direct, windows-latest)	3m 0s
checks / test (3.13, locked, ubuntu-latest)	47s
checks / test (3.13, locked, windows-latest)	2m 16s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 6s
checks / test (3.12, lowest-direct, windows-latest)	3m 58s
checks / test (3.12, locked, ubuntu-latest)	58s
checks / test (3.14, locked, windows-latest)	3m 34s
checks / test (3.14, locked, ubuntu-latest)	2m 32s
all-green	2s
	41m 1s

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