This fix prevents mail upgrades from failing when older message composers reference records from modules that are not yet loaded. It helps ensure upgrades complete more reliably without interrupting business operations.

When upgrading mail across the addition of the linked record's company and mail alias, if the `composer.model` is not part of a module that's already loaded (which is very likely) the compute will blow up when it tries to look up the model in the env.

Add that check to the condition.

This change marks the repository for the Odoo 17.0 release. It updates release information so deployments and users can correctly identify the software version.