Avoid using LFS when possible

[mwestphal]

Currently f3d-superbuild is never disabling lfs. It should:

• when cloning itself in CI
• when closing F3D in superbuild step

[mwestphal]

• https://gitlab.kitware.com/cmb/cmb-superbuild/-/blob/master/cmake/CMBSuperbuildMacros.cmake
• https://gitlab.kitware.com/cmb/cmb-superbuild/-/blob/master/projects/smtk.cmake#L142