fix(Dropdown): still pop when disabled is true; (#2935)

Co-authored-by: chenguangzhuang <chenguangzhuang@techpci.com>

src/components/Dropdown/src/Dropdown.vue

@@ -14,6 +14,7 @@
             <a-popconfirm
               v-if="popconfirm && item.popConfirm"
               v-bind="getPopConfirmAttrs(item.popConfirm)"
+              :disabled="item.disabled"
             >
               <template #icon v-if="item.popConfirm.icon">
                 <Icon :icon="item.popConfirm.icon" />