This update applies code quality checks and cleanup across the VoIP feature, including the softphone and related tests. It does not introduce new user-facing functionality, but helps keep the calling tools more reliable and easier to maintain over time.

Forward-Port-Of: odoo/enterprise#97753

This update applies automated code quality rules to the VoIP area without changing how users place or manage calls. It helps keep the codebase consistent and easier to maintain, reducing the risk of future issues.

Forward-Port-Of: odoo/enterprise#97754