The bank reconciliation widget now correctly applies tax tags to base lines when a reconciliation model sets taxes. This helps ensure accounting entries and tax reporting stay accurate without manual correction.

- Create a tax with some tags
- Open the reconciliation widget
- Select a reconcile model setting taxes
=> The tax tags are not set on the base line

OPW - 2956115

This update fixes an error that could occur when users tried to print payslips. Payroll teams can now generate payslip documents without encountering the related system traceback.

https://github.com/odoo/enterprise/pull/27323 introduced a `self` when it
should be using `request`, therefore causing a traceback. This commit fixes the
issue.