b881e025f6
Change email booking field's editable property from 'system' to 'system-but-optional' across all code paths. This allows email field to be optional when phone field is required instead. - Updated systemBeforeFieldEmail in API v2024_06_14 transformers - Fixed explicit override in API v2024_04_15 service - Updated test utility to match production behavior - Ensures consistency with validation logic that requires either email OR phone to be visible and required Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>