DatePicker & Cascader: fix the dropdown animation direction (#21806)

packages/cascader/src/cascader.vue

@@ -159,7 +159,8 @@ const PopperMixin = {
     arrowOffset: Popper.props.arrowOffset,
     offset: Popper.props.offset,
     boundariesPadding: Popper.props.boundariesPadding,
-    popperOptions: Popper.props.popperOptions
+    popperOptions: Popper.props.popperOptions,
+    transformOrigin: Popper.props.transformOrigin
   },
   methods: Popper.methods,
   data: Popper.data,

packages/date-picker/src/picker.vue

@@ -97,7 +97,9 @@ const NewPopper = {
     appendToBody: Popper.props.appendToBody,
     offset: Popper.props.offset,
     boundariesPadding: Popper.props.boundariesPadding,
-    arrowOffset: Popper.props.arrowOffset
+    arrowOffset: Popper.props.arrowOffset,
+    placement: Popper.props.placement,
+    transformOrigin: Popper.props.transformOrigin
   },
   methods: Popper.methods,
   data() {