Since [1] when the translations becames stored as JSONB, the translations of website-specific views were lost when adding a new language. [2] did fix a similar problem when installing an App, but did not solve this. This commit makes sure to only change the requested translations without impacting the existing ones when a language is added. Steps to reproduce: - Add French language to the website - Add the number snippet on the homepage - Translate "Useful options" -> "Options utiles" - Go to setting -> Languages -> Activate any language (not even on a website) => French translation disappeared. [1]: https://github.com/odoo/odoo/commit/ef00294e7189359c47638c4a71626f1937395edb [2]: https://github.com/odoo/odoo/commit/91a9c870eede96040ac49d2375fe0e18342342e1 opw-3120079 closes odoo/odoo#111378 X-original-commit: 52fd577de8e270f84e8ca23c9350f2fb3ab5a7d8 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>