* fix: smart_split not working correctly when creating a window with cursor over reserved area
* use getClosestNodeOnWorkspace instead of getFirstNodeOnWorkspace when hovering over reserved area
* optimize `getClosestNodeOnWorkspace`
* remove unused methods
src/helpers/Vector2D.cpp:27:26: error: no member named 'floor' in namespace 'std'
return Vector2D(std::floor(x), std::floor(y));
~~~~~^
src/helpers/Vector2D.cpp:27:41: error: no member named 'floor' in namespace 'std'
return Vector2D(std::floor(x), std::floor(y));
~~~~~^
src/helpers/Vector2D.cpp:37:17: error: no member named 'sqrt' in namespace 'std'
return std::sqrt(dx * dx + dy * dy);
~~~~~^
