Option to configure locale-based flow templates during WhatsApp onboarding

REQUEST_SUMMARY_V2 Problem - Currently, all clients receive English flow templates by default when they connect WhatsApp. A customer suggested that customers should be able to select their locale during onboarding and decide whether they want English flows enabled automatically. This would allow us to generate pre-made templates aligned with the customer’s preferred language and onboarding context. While 98% of customers currently use English, this feature could improve flexibility and localization for the remaining use cases. Expected behavior - Allow language selection/configuration in relevant UI and templates - Ensure customer-facing outputs are available in requested language - Keep fallback behavior explicit when translation is unavailable Business impact - Reduces manual operational effort for teams - Improves consistency and customer experience - Helps teams move faster with fewer support escalations Legacy category: Improvement