Fixed bl_load_py_modules / script_load_modules unit test

It tried to assert that
addons/io_blend_utils/blender_bam-unpacked.whl/__init__.py was loaded when
the io_blend_utils module was imported. However, this happens only on
demand, and not directly when importing the add-on.

tests/python/bl_load_py_modules.py

@@ -36,6 +36,9 @@ BLACKLIST = {
     "cycles",
     "io_export_dxf",  # TODO, check on why this fails
     'io_import_dxf',  # Because of cydxfentity.so dependency
+
+    # The unpacked wheel is only loaded when actually used, not directly on import:
+    "io_blend_utils/blender_bam-unpacked.whl",
     }
 
 # Some modules need to add to the `sys.path`.