Sofa.Gui crashes when importing into a runSofa executable (embed interpreted)

[jnbrunet]

For some reason, this only happen when using a packaged version of SOFA (i.e. not build install by ourself).

To reproduce:

1. Download the latest SOFA v20.12 package
2. Create this simple scene file and do not put it inside the directory from which runSofa will run, but use instead a different folder:
   test/test.py

# test/test.py
import Sofa.Gui
def createScene(root):
    pass

3. Run it using runSofa, for example: runSofa -l libSofaPython3.so test/test.py
4. This happens:

[ERROR]   [SofaPython3::SceneLoader] ModuleNotFoundError: No module named 'Sofa.Gui'

At:
  test.py(1): <module>
  <frozen importlib._bootstrap>(219): _call_with_frames_removed
  <frozen importlib._bootstrap_external>(728): exec_module
  <frozen importlib._bootstrap>(677): _load_unlocked
  <frozen importlib._bootstrap>(696): _load
  /usr/lib/python3.7/imp.py(171): load_source
  /usr/lib/python3.7/imp.py(234): load_module
  <string>(3): <module>

Moreover, everything is fine (i.e. the bug isn't present) if runSofa is ran from the same directory as the scene file. For example, running runSofa -l libSofaPython3.so test.py instead of runSofa -l libSofaPython3.so test/test.py

[RyanPaulMcKenna]

[INFO] [PluginManager] Loaded plugin: /home/ozwald/sofa/build/v23.12/install/lib/libSofa.GL.C
omponent.Shader.so
At:
/usr/lib/python3/dist-packages/numpy/core/init.py(49):
(241): _call_with_frames_removed
(883): exec_module
(703): _load_unlocked
(1006): _find_and_load_unlocked
(1027): _find_and_load
(241): _call_with_frames_removed
(1079): _handle_fromlist
/usr/lib/python3/dist-packages/numpy/init.py(142):
(241): _call_with_frames_removed
(883): exec_module
(703): _load_unlocked
(1006): _find_and_load_unlocked
(1027): _find_and_load
(241): _call_with_frames_removed
(992): _find_and_load_unlocked
(1027): _find_and_load
(241): _call_with_frames_removed
(992): _find_and_load_unlocked
(1027): _find_and_load
/home/ozwald/sofa/build/v23.12/install/plugins/SofaPython3/share/SofaPython3/examples/liver.py(29): createScene

SofaPython3 is loaded fine but when I try to run any of the examples nothing loads in the simulator it is just blank, running the animation does nothing. It is as if nothing is being loaded. And I get the above error.