Fix openvino numeric import (#3269)

### Changes

As in the title

Author: nikita-savelyevv

nncf/tensor/functions/__init__.py

@@ -80,7 +80,7 @@ def _initialize_backends():
         import nncf.tensor.functions.torch_numeric  # noqa F401
 
     with contextlib.suppress(ImportError):
-        import nncf.tensor.functions.ov  # noqa: F401
+        import nncf.tensor.functions.openvino_numeric  # noqa: F401
 
 
 _initialize_backends()