Fix(load_ociolook): strip extension before suffix match

[krishnaavril]

Should fix the error when loading the published OCIOlook

  File "/home/avril9950x3d/.local/share/AYON/addons/core_1.9.1+lbs.1/ayon_core/tools/loader/models/actions.py", line 1005, in _load_representations_by_loader
    load_with_repre_context(
  File "/home/avril9950x3d/.local/share/AYON/addons/core_1.9.1+lbs.1/ayon_core/pipeline/load/utils.py", line 327, in load_with_repre_context
    return loader.load(repre_context, name, namespace, options)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/avril9950x3d/.local/share/AYON/addons/core_1.9.1+lbs.1/ayon_core/pipeline/load/plugins.py", line 430, in wrapped_method
    result = original_method(self, *args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/avril9950x3d/.local/share/AYON/addons/nuke_0.4.8/ayon_nuke/plugins/load/load_ociolook.py", line 61, in load
    group_node = self._create_group_node(
                 ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/avril9950x3d/.local/share/AYON/addons/nuke_0.4.8/ayon_nuke/plugins/load/load_ociolook.py", line 184, in _create_group_node
    raise ValueError(
ValueError: File with extension 'cube' not found in directory```

[rdelillo]

Thanks a lot @krishnaavril for this !