Update 0.4.9. Fixes

Hopefully last fix update before 0.5 Version

- Fixed some issues during train station loading leading to errors, potentially snowballing into other issues. - Fixed issue after changing roads for station with more than one Out Connections. - Fixed issues caused by changing Road Station from layout options, disabled layout change for Ports. - Fixed rail/road slope construction limits. 1 tile for roads, 1/2 tile for rail. - Fixed Manual Road Connect sometimes not connecting roads properly. - Fixed bridge ship navigation with the new spline bridge system. - Fixed ship navigation layer display issue. - Fixed Delete active station UI blocking if too many vehicles are referenced. - Fixed city Construction Material UI counter not updating. - Fixed VecTR truck trailer coupling issues. - Some improvements to bridge collision, snapping, and autorotation during construction. - Added tile highlight during bridge construction.