fix(Uploader): can't get index in delete event #7481

src/uploader/PreviewItem.js

@@ -12,6 +12,7 @@ export default {
   props: {
     name: String,
     item: Object,
+    index: Number,
     imageFit: String,
     lazyLoad: Boolean,
     deletable: Boolean,

src/uploader/index.js

@@ -238,6 +238,7 @@ export default createComponent({
       <PreviewItem
         v-slots={{ 'preview-cover': slots['preview-cover'] }}
         item={item}
+        index={index}
         onClick={() => {
           emit('click-preview', item, getDetail(index));
         }}