LPS-44123 Fix regression caused by "LPS-44123 If we don't set explicitly the highlight check the portal property" - Default value was never used

Hey Eudaldo,

Just found that liferay@e734eec02315aaadfe0f7239d3d590e0b44cb3b3 caused a regression in the taglib: highlight doesn't work, default values (from the PropsValues) call is never used.

I fixed it by applying the usual pattern for accessing portal properties in taglib in util-taglib module.