feat: 编辑已上传壁纸时，替换壁纸，页面列表壁纸会消失

src/components/Upload/index.vue

@@ -261,7 +261,7 @@ export default {
     onDelete() {
       this.form.file = "";
       this.percentage = 0;
-      this.$emit("upload", this.form);
+      // this.$emit("upload", this.form);
     },
 
     // 如果上传失败 重新上传

src/views/operation/piano/index.vue

@@ -234,7 +234,9 @@ export default {
 
     // 上传
     uploadCode(e) {
-      this.dialogData.pic = e.file;
+      if (e != null && e.size != null && e.size > 0) {
+        this.dialogData.pic = e.file;
+      }
     },
 
     // 提交分类表单