Need to agree how to configure this, currently nopresent+hint is the documented way to configure a log's syncprov, we might want to change that but in a way binding this to nopres (or both as is done in the current version) makes some sense, since we're detecting when a present phase would be needed to signal deletions in the database and have to reject the operation.
This approach supersedes ITS#9742 patch as well, and incidentally this is enough to make its8752 regression test pass again. It doesn't fix ITS#9580 but might form a part of the solution.