Add idle session timeout to StreamableHTTPSessionManager #730

Job	Run time
checks / readme-snippets	14s
checks / pre-commit	36s
checks / test (3.11, lowest-direct, ubuntu-latest)	54s
checks / test (3.11, locked, ubuntu-latest)	50s
checks / test (3.12, locked, windows-latest)	3m 37s
checks / test (3.14, lowest-direct, windows-latest)	2m 17s
checks / test (3.13, lowest-direct, windows-latest)	2m 55s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 20s
checks / test (3.11, lowest-direct, windows-latest)	2m 36s
checks / test (3.14, locked, windows-latest)	3m 9s
checks / test (3.10, locked, windows-latest)	2m 13s
checks / test (3.12, lowest-direct, windows-latest)	3m 35s
checks / test (3.13, lowest-direct, ubuntu-latest)	54s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 1s
checks / test (3.10, locked, ubuntu-latest)	53s
checks / test (3.10, lowest-direct, windows-latest)	2m 26s
checks / test (3.11, locked, windows-latest)	2m 53s
checks / test (3.14, locked, ubuntu-latest)	2m 59s
checks / test (3.10, lowest-direct, ubuntu-latest)	53s
checks / test (3.12, locked, ubuntu-latest)	54s
checks / test (3.13, locked, ubuntu-latest)	46s
checks / test (3.13, locked, windows-latest)	2m 23s
all-green	5s
	40m 23s

Provide feedback