The redistributeLockedAmount() function facilitates the transfer of UStb from a blacklisted user to an unblacklisted user. However, when the state is WHITELIST_ENABLED, there is no mechanism in place to transfer UStb from an unwhitelisted user to a whitelisted user.
https://github.com/code-423n4/2024-11-ethena-labs/blob/main/contracts/ustb/UStbMinting.sol#L111-L120
Include a function to transfer UStb from an unwhitelisted user to a whitelisted user when the state is WHITELIST_ENABLED.
