refactor: consolidate imports in ws-api-client-trade.ts

- Combined DefaultLogger and WebsocketAPIClient imports into a single line for cleaner code structure.

Author: JJ-Cro

examples/V3 - UTA/WS-API/ws-api-client-trade.ts

@@ -1,5 +1,4 @@
-import { DefaultLogger } from '../../../src/index.js';
-import { WebsocketAPIClient } from '../../../src/websocket-api-client.js';
+import { DefaultLogger, WebsocketAPIClient } from '../../../src/index.js';
 
 // or
 // import { DefaultLogger, WS_KEY_MAP, WebsocketAPIClient } from 'bitget-api';