Use dojoClick=true for all clickable things in the Calendar,
including the drop down, for responsiveness and to fix #18140.

Still leaves the underlying problems that dijit/popup is calling
preventDefault() on the touchend event, thus canceling the click event,
and that (canceling out the first problem), dojo/touch is ignoring the
call to preventDefault().

Fixes #18140, refs #18150.

(cherry picked from commit 52fbf1f07d680342063f095b8f0f9a9471723716)