The ride viewport does not work the same as other viewports due to the selection of views that it has. After refactoring the focus system to use a more streamlined approach the ride viewport lost its invalidation on resizing. If the ride window was to use the same viewport update code as say the guest window then the viewport focus still ends up incorrect due to it no longer centring the focus. Therefore the best approach was to lose the focus on resize and force a recalculation of it.
Also renamed Focus2 to Focus as Focus2 was meant to just be fill in whilst removing the original focus structs.
* Remove focus union and replace with typed focus
This if for the NSF to allow for CoordsXYZ
* Remove legacy structures
* Rework viewport_create to deduplicate logic
* Simplify yet further
* Apply review comments
* Remove intermediate
This will eventually replace all of the get_sprite and try_get_sprite calls
Further use of GetSprite
Use GetSprite in all remaining easy to use functions
Correct formatting
Rename GetSprite to GetEntity
Make suggested changes
Remove const to allow for building
Fix crashes due to next sprite
