oe.id and transactions.id no longer share a sequence

[ehuelsmann]

Consequences of the fact that they do not share a common sequence anymore:

• Recurring orders don't work (I've even hidden the buttons). It hasn't worked for 14 years (due to overlapping number ranges in oe.id versus transactions.id) and has been aggravated for the last 8 years by an integrity constraint of recurring.id against transactions.id, completely blocking the ability to add schedules to orders, except when there's accidental overlap in the number ranges (which is more likely to be hazardous than a intentional.)
• goods__history (https://github.com/ledgersmb/LedgerSMB/blob/33c601fdb8ebfa3c012d2773e388c3e679aa2a99/sql/modules/Goods.sql#L519-L525) joins trans_id retrieved from both oe as well as ar/ap (i.e. transactions), which is similarly broken to recurring orders

[ehuelsmann]

I'm not sure the fact that they no longer share a series is a bug (I don't think so); the knock-on effects are unintentional, though. Definitely regressions.