Prevent browser to scroll when space it pressed on a TabSheet (#14320)

Browser page scroll by default when space key is pressed.
The TabSheet uses the space key (32) to select the tab
when navigating using left/right keys. So when the space
is pressed the default browser page scroll behavior is
now prevented.

Change-Id: I8c3c7c4904109018d2f91447235e30dbd29eec5d