Odoo translation documentation:
https://www.odoo.com/documentation/17.0/developer/howtos/translations.html
https://github.com/odoo/odoo/wiki/Translations
Git issues for v16 and v17 translation issue:
https://github.com/odoo/odoo/issues/115876
https://github.com/odoo/odoo/issues/124124
https://github.com/odoo/odoo/issues/125524 - fix?
Possible fixes:
https://github.com/odoo/odoo/pull/124790
Other ways to translate add translate files to modules:
1. Export the translation file from the addons you want to override.
2. Translate it using POEeit or similar.
3. Drop the translation file inside a i18n_extra folder in the addon. E.g.: addon/i18n_extra/fr.pot
