This update standardizes modal pop-up windows across many Odoo screens so they follow the same Bootstrap-based layout and behavior. Users should see a more consistent experience when completing accounting, budgeting, analytics, and related wizard workflows, with a related web tour test fix to keep automated checks stable.

Task: https://www.odoo.com/web#id=19645&view_type=form&model=project.task&menu_id=3942&action=327
Pad: https://pad.odoo.com/p/r.Y1fLImzP4ay8emS2

As @aab-odoo commented here https://github.com/odoo-dev/odoo/commit/3cbe1b2404847933d013e213139f5c6952092c4f#commitcomment-12708717, which almost changes whole spec so I have created this new PR after review.

Partner and customer records are easier to manage, with clearer choices between companies and individuals and simplified address handling for contacts. The update also streamlines related account, VAT, payment, CRM, delivery, event, HR, repair, and point-of-sale views so users can access key information through cleaner forms and counters.

Add a new selection field company_type, replacing is_company. To keep
backward compatibility, the old field is still stored and considered
as an interface field for the new company_type field. The deprecated
tag is added to ensure people will udpate their module.

The customer form has been redesigned to make it clearer whether a record is a company, individual, contact, or address. Contact lists, kanban cards, customer menus, and related accounting and CRM views were adjusted so users can manage customer information with less confusion.

Task : https://www.odoo.com/web#id=13765&view_type=form&model=project.task&action=327
Pad : https://pad.odoo.com/p/r.rwwROfDJuoEdD3by