fix(pop-upload): 统一变量替换tiny前缀类名

Author: chenxi-20

packages/theme/src/pop-upload/index.less

@@ -14,7 +14,9 @@
 @import './vars.less';
 
 @popupload-prefix-cls: ~'@{css-prefix}popupload';
+@file-upload-prefix-cls: ~'@{css-prefix}file-upload';
 @upload-list-prefix-cls: ~'@{css-prefix}upload-list';
+@popconfirm-prefix-cls: ~'@{css-prefix}popconfirm';
 @popupload__modal-prefix-cls: ~'@{css-prefix}popupload__modal';
 @alert-prefix-cls: ~'@{css-prefix}alert';
 
@@ -163,18 +165,18 @@
       overflow-y: auto;
     }
 
-    .tiny-file-upload .tiny-upload-list__text-title {
+    .@{file-upload-prefix-cls} .@{upload-list-prefix-cls}__text-title {
       display: none;
     }
 
-    .tiny-popupload__dialog-footer {
+    .@{popupload-prefix-cls}__dialog-footer {
       justify-content: flex-end;
     }
   }
 
   // 新规范适配
   &__pop-confirm {
-    .tiny-popconfirm-popover__title {
+    .@{popconfirm-prefix-cls}-popover__title {
       white-space: nowrap;
     }
   }