Send SEP-2243 Mcp-Method/Mcp-Name headers from the StreamableHTTP client #2374

Job	Run time
checks / pre-commit	33s
checks / readme-snippets	11s
checks / test (3.10, locked, windows-latest)	3m 16s
checks / test (3.10, lowest-direct, windows-latest)	2m 44s
checks / test (3.10, locked, ubuntu-latest)	1m 4s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 4s
checks / test (3.11, lowest-direct, windows-latest)	2m 49s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 4s
checks / test (3.11, locked, ubuntu-latest)	57s
checks / test (3.12, lowest-direct, windows-latest)	3m 44s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 11s
checks / test (3.12, locked, ubuntu-latest)	1m 8s
checks / test (3.11, locked, windows-latest)	2m 50s
checks / test (3.12, locked, windows-latest)	3m 37s
checks / test (3.13, lowest-direct, ubuntu-latest)	57s
checks / test (3.13, lowest-direct, windows-latest)	3m 16s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 29s
checks / test (3.13, locked, ubuntu-latest)	45s
checks / test (3.14, lowest-direct, windows-latest)	2m 27s
checks / test (3.13, locked, windows-latest)	2m 22s
checks / test (3.14, locked, windows-latest)	3m 31s
checks / test (3.14, locked, ubuntu-latest)	2m 6s
all-green	2s
	43m 7s

Provide feedback