Returns true if text is elided, false otherwise.
Text is elided when the element that contains it is not large enough to display the full text, and has the following style property settings.
overflow: Overflow.Hidden
whiteSpace: WhiteSpace.NoWrap
textOverflow: TextOverflow.Ellipsis
textOverflowPosition: TextOverflowPosition.<End | Start | Middle>
The text Element hides elided text, and displays an ellipsis ('...') to indicate that there is hidden overflow content.