Only affects migrated accounts

When a previously migrated user changes their name, the previous name of that user should be dropping to the public after the 37 days "grace period", but with migrated accounts this does not happen. After 37 days, this name is unclaimed, and still assigned to the UUID of the previous owner of that name.

Links that proof this happening to "otu":

• https://api.mojang.com/user/profiles/0ef953451e4846458e842f137bf25dc1/names
• https://api.mojang.com/user/profile/agent/minecraft/name/otu
• https://api.mojang.com/user/profile/0ef953451e4846458e842f137bf25dc1

This is currently happening with a lot of names that should be dropping to the public soon, and creating "blocked" usernames because they are not claimable.