Several test suites now use the standard notification service instead of a custom fake version. This keeps tests closer to real behavior while reducing maintenance effort, with no expected change for end users.

* = documents_spreadsheet, planning, timesheet_grid, web_studio

The real service works just as well, gives more guarantee on what is actually tested, and requires less lines of code.

https://github.com/odoo/odoo/pull/132744

This update adjusts internal tests so they stay aligned with recent mail system changes. It helps ensure helpdesk and mail-related workflows continue to behave reliably as future multi-company email alias support is prepared.

Simple adaptation to community changes.

Task-3453347 (Mail: Move Mail ICP from Base to Mail)
Prepares Task-36879 (Mail: Support MultiCompany Aliases)

The mobile web interface has been updated to stop using an older popover component. This helps keep the mobile experience easier to maintain and aligned with current platform standards, with no expected change for day-to-day users.

Replace usage of legacy Popover component.

task-3439226