Add idle session timeout to StreamableHTTPSessionManager #583

Job	Run time
checks / readme-snippets	2m 29s
checks / pre-commit	32s
checks / test (3.10, lowest-direct, windows-latest)	4m 56s
checks / test (3.10, locked, windows-latest)	6m 49s
checks / test (3.11, lowest-direct, ubuntu-latest)	3m 2s
checks / test (3.11, lowest-direct, windows-latest)	7m 36s
checks / test (3.10, lowest-direct, ubuntu-latest)	6m 31s
checks / test (3.10, locked, ubuntu-latest)	2m 54s
checks / test (3.12, locked, ubuntu-latest)	6m 30s
checks / test (3.14, locked, windows-latest)	6m 36s
checks / test (3.12, lowest-direct, windows-latest)	7m 46s
checks / test (3.13, locked, windows-latest)	2m 33s
checks / test (3.14, lowest-direct, windows-latest)	6m 27s
checks / test (3.13, lowest-direct, windows-latest)	2m 45s
checks / test (3.13, lowest-direct, ubuntu-latest)	6m 11s
checks / test (3.12, locked, windows-latest)	3m 27s
checks / test (3.12, lowest-direct, ubuntu-latest)	8m 8s
checks / test (3.13, locked, ubuntu-latest)	47s
checks / test (3.11, locked, windows-latest)	4m 50s
checks / test (3.14, lowest-direct, ubuntu-latest)	6m 37s
checks / test (3.14, locked, ubuntu-latest)	2m 48s
checks / test (3.11, locked, ubuntu-latest)	5m 11s
all-green	5s
	1h 45m 30s

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