修复字幕Y轴偏移修改后设置参数设置失败的BUG

src/entities/WSProtocol.ts

@@ -1577,6 +1577,8 @@ export namespace Protocol {
       this.rpc_id = rcp_id ?? 0;
       this.command = Protocol.Commands.kRpcSetSubtitle;
       this.subtitle = subtitle ?? new SubtitleEntity();
+
+      this.subtitle.y_offset = parseInt(<any>this.subtitle.y_offset);
     }
   }