- Introduced a new function `GetUserUsableGroupsCopy` to return a copy of user usable groups.
- Updated `GetUserUsableGroups` to utilize the new function for better encapsulation.
- Changed variable names from `UserUsableGroups` to `userUsableGroups` for consistency.
- Enhanced `GetUserUsableGroups` logic to ensure it returns a copy of the groups, preventing unintended modifications.
- Replaced references to common.GroupRatio and common.UserUsableGroups with corresponding functions from the new setting package across multiple controllers and services.
- Introduced new setting functions for managing group ratios and user usable groups, enhancing code organization and maintainability.
- Updated related functions to ensure consistent behavior with the new setting package integration.
