Superevents marked to be published before being assigned a superevent ID

While testing on emfollow-test examples of bug was found where superevents were marked to be published even though they did not yet have a superevent ID. This led to errors when applying ADVREQ here: https://git.ligo.org/emfollow/gwcelery/-/blob/e75cdd4edd4efbb041d99717e7df971b8ac88ba6/gwcelery/tasks/superevents.py#L173

An example of this error:

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