Revert "Fix #64: Ensure transport sends are bound to Session.current"

This reverts commit 9e6c742.

Author: odrobnik

Sources/SwiftMCP/Transport/Session.swift

@@ -227,9 +227,7 @@ extension Session {
 
         let notification = JSONRPCMessage.notification(method: "notifications/progress",
                                                        params: params)
-        try? await self.work { _ in
-            try await self.transport?.send(notification)
-        }
+        try? await transport?.send(notification)
     }
 
     /// Send a log message notification to the client associated with this session, filtered by minimumLogLevel.
@@ -244,9 +242,7 @@ extension Session {
 
         let notification = JSONRPCMessage.notification(method: "notifications/message",
                                                        params: params)
-        try? await self.work { _ in
-            try await self.transport?.send(notification)
-        }
+        try? await transport?.send(notification)
     }
 
     /// Send a roots/list request to the client and return the roots.
@@ -281,24 +277,18 @@ extension Session {
     /// Send a notification that the list of available tools changed.
     public func sendToolListChanged() async throws {
         let notification = JSONRPCMessage.notification(method: "notifications/tools/list_changed")
-        try await self.work { _ in
-            try await self.transport?.send(notification)
-        }
+        try await transport?.send(notification)
     }
 
     /// Send a notification that the list of available resources changed.
     public func sendResourceListChanged() async throws {
         let notification = JSONRPCMessage.notification(method: "notifications/resources/list_changed")
-        try await self.work { _ in
-            try await self.transport?.send(notification)
-        }
+        try await transport?.send(notification)
     }
 
     /// Send a notification that the list of available prompts changed.
     public func sendPromptListChanged() async throws {
         let notification = JSONRPCMessage.notification(method: "notifications/prompts/list_changed")
-        try await self.work { _ in
-            try await self.transport?.send(notification)
-        }
+        try await transport?.send(notification)
     }
 }