refactor(wms): 优化发货单打印功能样式和布局

fix(waybill): 修复打印和保存图片时内容截断问题

chore: 删除不再使用的websocket测试页面

klp-ui/src/views/wms/delivery/waybill/index.vue

@@ -65,9 +65,12 @@
             </el-table-column>
             <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
               <template slot-scope="scope">
-                <el-button size="mini" type="text" icon="el-icon-view" @click.stop="handlePrint(scope.row)">打印发货单</el-button>
-                <el-button size="mini" type="text" icon="el-icon-edit" @click.stop="handleUpdate(scope.row)">修改</el-button>
-                <el-button size="mini" type="text" icon="el-icon-delete" @click.stop="handleDelete(scope.row)">删除</el-button>
+                <el-button size="mini" type="text" icon="el-icon-view"
+                  @click.stop="handlePrint(scope.row)">打印发货单</el-button>
+                <el-button size="mini" type="text" icon="el-icon-edit"
+                  @click.stop="handleUpdate(scope.row)">修改</el-button>
+                <el-button size="mini" type="text" icon="el-icon-delete"
+                  @click.stop="handleDelete(scope.row)">删除</el-button>
               </template>
             </el-table-column>
           </el-table>
@@ -128,14 +131,8 @@
     </el-dialog>
 
     <!-- 打印发货单对话框 -->
-    <el-dialog 
-      title="打印发货单" 
-      :visible.sync="printDialogVisible" 
-      width="90%" 
-      append-to-body>
-      <WayBill 
-        :waybill="currentWaybill" 
-        :waybillDetails="currentWaybillDetails" />
+    <el-dialog title="打印发货单" :visible.sync="printDialogVisible" width="90%" append-to-body center>
+      <WayBill :waybill="currentWaybill" :waybillDetails="currentWaybillDetails" />
     </el-dialog>
   </div>
 </template>