Partial backport of odoo/odoo@94fa8d9625 keeping only event_crm part as other changes were done only for Odoo16. In this commit we try to compare formatted phones of registration and partner, before checking the actual phone numbers. If only formatting differs then it is not a different number. Task-3431124 X-original-commit: 4589eebe4978ac0746fa4bc5c8664cb30d912cc1 Part-of: odoo/odoo#129269