[IMP] account: Misc. improvements

Miscellaneous changes aiming to improve the user experience in the accounting module,
mainly in the journal model and its form view.

Also aim to improve the bank account creation wizard.

Task ID: #2250349

closes odoo/odoo#54494

Related: odoo/upgrade#1546
Related: odoo/enterprise#11862
Signed-off-by: oco-odoo <oco-odoo@users.noreply.github.com>