f93f2067b6
## Description Fixes WhatsApp embedded signup failing with "No WABA scope found in token." Meta recently changed which scopes embedded-signup tokens carry (whatsapp_business_manage_events instead of whatsapp_business_management), which tripped a brittle scope-string check. That check was redundant anyway — PhoneInfoService already verifies the token's access to the specific WABA by calling its /phone_numbers endpoint right before it. This removes the obsolete TokenValidationService and relies on the functional check. ## Type of change - [ ] Bug fix (non-breaking change which fixes an issue) ## Checklist: - [ ] My code follows the style guidelines of this project - [ ] I have performed a self-review of my code - [ ] I have commented on my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [ ] My changes generate no new warnings - [ ] I have added tests that prove my fix is effective or that my feature works - [ ] New and existing unit tests pass locally with my changes - [ ] Any dependent changes have been merged and published in downstream modules Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>