附件添加预览功能

src/common/components/sd-attachment.vue

@@ -186,7 +186,7 @@
                 <a-icon type="sd-swap"
               /></a>
             </a-tooltip>
-            <a-tooltip v-if="item.Completed && item.deletable" placement="top" title="预览">
+            <a-tooltip v-if="item.Completed" placement="top" title="预览">
               <a-button icon="sd-desktop" type="link" @click="preview(item)" />
             </a-tooltip>
           </div>