fix(upload): import missing image styles for upload component (#3101)

Author: oljc

packages/web-vue/components/upload/style/index.ts

@@ -2,4 +2,5 @@ import '../../style/index.less';
 import '../../button/style';
 import '../../trigger/style';
 import '../../progress/style';
+import '../../image/style';
 import './index.less';