This workaround the issue of the sync requiring a view.
This simply stores the rv3d members that are needed for
calling `view_dist_get`.
This is a workaround to avoid any difference in behavior
with legacy overlay while not violating the design principles.
A better fix would be to compute the offset differently
solely based on the `View` itself. But that would change
the display and should be done in another task.
7565b90900