Py: replace BaseExceptionFreeCADError with more suitable exception types

src/Gui/Selection.cpp

@@ -2375,7 +2375,7 @@ PyObject *SelectionSingleton::sGetSelectionObject(PyObject * /*self*/, PyObject
         return nullptr;
     }
     catch (const Base::Exception& e) {
-        PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
+        e.setPyException();
         return nullptr;
     }
 }