Adjust the mouse highlight overlay to run at the same layers as the
tooltip overlay. It always runs first due to having a lower position.
I think previously tooltips from ui ops were 1 frame behind due to this
being UNDER_WIDGETS.
Additionally change the tooltip overlay to draw after the fullscreen tli
instead of the world map interface. Having it render after the world map
caused tooltips to render after the floating world map too, which is too
early. The fullscreen tli is the root of both the fullscreen world map
and of the welcome screen.
5822e489f7