feat: 优化 card-list

@@ -21,7 +21,7 @@
 
       <view
         v-for="(item, idx) in items"
-        :key="getKey(item, idx)"
+        :key="getRenderKey(item, idx)"
         :class="['card-item', { 'select-item': selectable && showCheck }]"
         @click="toggleSelect(item, idx)"
         @tap="toggleSelect(item, idx)"
@@ -105,6 +105,10 @@ export default {
       const k = this.rowKey && item && item[this.rowKey] != null ? item[this.rowKey] : idx
       return k
     },
+    getRenderKey(item, idx) {
+      const base = this.getKey(item, idx)
+      return String(base) + '-' + String(idx)
+    },
     isSelected(item, idx) {
       const key = this.getKey(item, idx)
       return this.selectedKeys.includes(key)