QOL Continue to capture mouse position while dragging ImGui controls and mouse position goes to outside of window (#14999)

* Update GLCanvas3D.cpp

* support navigation cube

* capture events for transform widgets

* camera rotation and pan

* selection frame

* object drag

* fix navigation cube stealing drag events

* fix lag on navigation cuve

* variable layer height

* fix plates toolbar scrollbar

* Update GLCanvas3D.cpp

* Fix issue that mouse button state is wrong in certain macOS mouse events

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Co-authored-by: Noisyfox <timemanager.rick@gmail.com>

src/slic3r/GUI/Gizmos/GLGizmoBase.cpp

@@ -442,7 +442,7 @@ bool GLGizmoBase::use_grabbers(const wxMouseEvent &mouse_event) {
         }
     } else if (m_dragging) {
         // when mouse cursor leave window than finish actual dragging operation
-        bool is_leaving = mouse_event.Leaving();
+        bool is_leaving = mouse_event.Leaving() && !m_parent.has_mouse_capture(); // ORCA keep tracking mouse position while drag active and cursor not in window bounds
         if (mouse_event.Dragging()) {
             Point      mouse_coord(mouse_event.GetX(), mouse_event.GetY());
             auto       ray = m_parent.mouse_ray(mouse_coord);