[v2] Dispatcher/ServerRunner receive-path swap — replaces BaseSession (#2710)

tests/shared/test_otel.py

@@ -10,9 +10,6 @@ from mcp.server.mcpserver import MCPServer
 pytestmark = pytest.mark.anyio
 
 
-# Logfire warns about propagated trace context by default (distributed_tracing=None).
-# This is expected here since we're testing cross-boundary context propagation.
-@pytest.mark.filterwarnings("ignore::RuntimeWarning")
 async def test_client_and_server_spans(capfire: CaptureLogfire):
     """Verify that calling a tool produces client and server spans with correct attributes."""
     server = MCPServer("test")