Fix Bug #7: Remove logger call from message processing loop

Removed await logger?.debug() at line 207 in the for-await message loop.
This was causing delays when processing every incoming message, including
tool call responses.

Line 207 was in the hot path - executed for EVERY message received.

Author: dcherrera

Sources/MCP/Client/Client.swift

@@ -203,8 +203,8 @@ public actor Client {
             do {
                 for try await data in stream {
                     NSLog("🔵 CLIENT: Received data in loop - \(data.count) bytes")
-                    // Keep this one - it's after we receive data so no race condition
-                    await logger?.debug("CLIENT: Received data in loop", metadata: ["size": "\(data.count)"])
+                    // REMOVED: await logger?.debug() - causes delay in message processing loop
+                    // await logger?.debug("CLIENT: Received data in loop", metadata: ["size": "\(data.count)"])
                     if Task.isCancelled { break }
 
                     // Attempt to decode data