Send SEP-2243 Mcp-Method/Mcp-Name headers from the StreamableHTTP client #2373

Job	Run time
checks / readme-snippets	10s
checks / pre-commit	32s
checks / test (3.11, lowest-direct, windows-latest)	3m 22s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 9s
checks / test (3.12, locked, ubuntu-latest)	1m 6s
checks / test (3.11, locked, windows-latest)	2m 51s
checks / test (3.10, lowest-direct, windows-latest)	3m 49s
checks / test (3.10, locked, ubuntu-latest)	1m 5s
checks / test (3.11, locked, ubuntu-latest)	1m 0s
checks / test (3.12, locked, windows-latest)	3m 48s
checks / test (3.13, locked, ubuntu-latest)	59s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 8s
checks / test (3.13, lowest-direct, windows-latest)	2m 59s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 10s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 11s
checks / test (3.14, locked, ubuntu-latest)	2m 38s
checks / test (3.14, lowest-direct, windows-latest)	2m 39s
checks / test (3.10, locked, windows-latest)	2m 54s
checks / test (3.13, locked, windows-latest)	2m 23s
checks / test (3.12, lowest-direct, windows-latest)	3m 27s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 28s
checks / test (3.14, locked, windows-latest)	4m 13s
all-green	4s
	46m 5s

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