fix: Constructor assignment error

Author: eeaters

mcp/src/main/java/io/modelcontextprotocol/client/McpAsyncClient.java

@@ -180,7 +180,7 @@ public class McpAsyncClient {
 		this.clientCapabilities = features.clientCapabilities();
 		this.transport = transport;
 		this.roots = new ConcurrentHashMap<>(features.roots());
-		this.toolAnnotationsHandler = toolAnnotationsHandler != null ? this.toolAnnotationsHandler : tool -> null;
+		this.toolAnnotationsHandler = toolAnnotationsHandler != null ? toolAnnotationsHandler : tool -> null;
 		// Request Handlers
 		Map<String, RequestHandler<?>> requestHandlers = new HashMap<>();