Fix clippy::needless_borrow lint violations (#36444)

Release Notes:

- N/A

crates/context_server/src/listener.rs

@@ -315,12 +315,12 @@ impl McpServer {
                     Self::send_err(
                         request_id,
                         format!("Tool not found: {}", params.name),
-                        &outgoing_tx,
+                        outgoing_tx,
                     );
                 }
             }
             Err(err) => {
-                Self::send_err(request_id, err.to_string(), &outgoing_tx);
+                Self::send_err(request_id, err.to_string(), outgoing_tx);
             }
         }
     }

crates/context_server/src/types.rs

@@ -691,7 +691,7 @@ impl CallToolResponse {
         let mut text = String::new();
         for chunk in &self.content {
             if let ToolResponseContent::Text { text: chunk } = chunk {
-                text.push_str(&chunk)
+                text.push_str(chunk)
             };
         }
         text