fix pyright

Author: asheshvidyut

src/mcp/client/transport_session.py

@@ -17,7 +17,7 @@ async def initialize(self) -> types.InitializeResult:
         raise NotImplementedError
 
     @abstractmethod
-    async def send_ping(self):
+    async def send_ping(self) -> types.EmptyResult:
         raise NotImplementedError
 
     @abstractmethod

src/mcp/server/fastmcp/server.py

@@ -327,7 +327,7 @@ def get_context(self) -> Context[ServerSession, LifespanResultT, Request]:
         return Context(request_context=request_context, fastmcp=self)
 
     async def call_tool(
-        self, name: str, arguments: dict[str, Any], request_context: RequestContext | None = None
+        self, name: str, arguments: dict[str, Any], request_context: RequestContext[ServerSession, LifespanResultT, Request] | None = None
     ) -> Sequence[ContentBlock] | dict[str, Any]:
         """Call a tool by name with arguments."""
         if request_context: