[16.0][FIX] account_journal_restrict_mode: Ensure that the secure sequence is always created.

[JordiBForgeFlow]

Currently the secure sequence is only created on the write operation. But during the set up of a new company, when the inventory valuation and other journals are created upon setting up the chart of accounts, only the create method is called, not the write, and as a consequence no secure sequence is created.

@MarinaAForgeFlow @LoisRForgeFlow

[LoisRForgeFlow]

Makes sense, I would wait to see if Odoo accepts the proposed fix: https://github.com/odoo/odoo/pull/147738

[MarinaAForgeFlow]

LGTM