[16.0][FIX] account_operating_unit: do not show inter-OU balance journals as invoice lines

[AaronHForgeFlow]

Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-18.0

Modules to migrate

• [ ] pms_base - By @max3903 - #360

Missing module? Check https://github.com/OCA/maintainer-tools/wiki/%5BFAQ%5D-Missing-modules-in-migration-issue-list

[max3903]

Testing odoo-module-migrator to migrate pms_base from 14.0 to 18.0