Draft: Disable lines during velo closing (stupid workaround edition)

This changes DisableLinesDuringVPClosing to be true as in the production stack, but also adds an unused property that differentiates between the two calls to make_invert_event_list so that the PyConf error is solved. This is definitely not the most elegant solution, so if someone has an idea for a better implementation I am happy to try it.

FYI @msaur the CI tests are passing for me locally with this