add "clear text" button on ui:inputDate and uiLinputDateTime.
@bug W-2119932@
Fix default menu item highlight.
@Bug W-2234265@
Revert "Fix default menu item highlight."

This reverts commit 09515eafdd83a05ba6a304638c5d87d6e56ae496.
Merging origin/ssun/master-pending-clearButtonForInputDate into master