function isHidden(oElem) {
		return (oElem.offsetWidth <= 0 && oElem.offsetHeight <= 0) || jQuery.css(oElem, 'visibility') === 'hidden';
	}
Checks whether an Element is invisible for the end user.

This is a combination of jQuery's :hidden selector (but with a slightly
different semantic, see below) and a check for CSS visibility 'hidden'.

Since jQuery 2.x, inline elements, such as span, might be considered 'visible'
although they have zero dimensions (for example, an empty span). In jQuery 1.x, such
elements had been treated as 'hidden'.

As some UI5 controls rely on the old behavior, this method restores it.

@param {Element} oElem Element to check the dimensions for
@returns {boolean} Whether the Element either has only zero dimensions or has visibility:hidden (CSS)
@alias module:sap/ui/dom/isHidden
@since 1.72
@private
@ui5-restricted