Make some Window::updateInteractiveMoveResize() code less misleading
The "!isMovable()" code path is needed to handle moving fullscreen windows. Maximized windows are movable and their geometry is computed in Window::nextInteractiveMoveGeometry().
The "!isMovable()" code path is needed to handle moving fullscreen windows. Maximized windows are movable and their geometry is computed in Window::nextInteractiveMoveGeometry().