[Breadcrumb] Current page does not ellipse when long

[JordanWSmith15]

1. Go to Breadcrumb's has-overflow storybook: https://next.carbon-addons-iot-react.com/?path=/story/1-watson-iot-breadcrumb--has-overflow
2. In properties, add a long text string to the current page Result: Middle sections of breadcrumb truncate correctly, but the black text eventually blows out of the container Desired: Black text truncates with an ellipsis. On hover, display a browser native tooltip that allows the user to read the full string