feat(client): add explicit session_id support for Streamable HTTP resumption #1569

Job	Run time
checks / pre-commit	37s
checks / readme-snippets	11s
checks / test (3.11, lowest-direct, windows-latest)	2m 22s
checks / test (3.10, locked, ubuntu-latest)	45s
checks / test (3.11, lowest-direct, ubuntu-latest)	47s
checks / test (3.10, lowest-direct, ubuntu-latest)	41s
checks / test (3.10, lowest-direct, windows-latest)	2m 12s
checks / test (3.12, lowest-direct, ubuntu-latest)	51s
checks / test (3.10, locked, windows-latest)	2m 4s
checks / test (3.11, locked, ubuntu-latest)	45s
checks / test (3.12, lowest-direct, windows-latest)	3m 28s
checks / test (3.12, locked, ubuntu-latest)	50s
checks / test (3.11, locked, windows-latest)	2m 14s
checks / test (3.13, locked, windows-latest)	2m 52s
checks / test (3.14, lowest-direct, ubuntu-latest)	59s
checks / test (3.12, locked, windows-latest)	3m 5s
checks / test (3.13, locked, ubuntu-latest)	43s
checks / test (3.13, lowest-direct, windows-latest)	2m 18s
checks / test (3.14, lowest-direct, windows-latest)	2m 11s
checks / test (3.13, lowest-direct, ubuntu-latest)	46s
checks / test (3.14, locked, windows-latest)	2m 49s
checks / test (3.14, locked, ubuntu-latest)	2m 8s
all-green	2s
	35m 40s

Provide feedback