FAILED_TO_UNLINK_LAST_ACCOUNT Localization Fails in AuthUIProvider

[e-renna]

When attempting to localize the error message for FAILED_TO_UNLINK_LAST_ACCOUNT by passing a custom translation string to AuthUIProvider's localization prop, the change has no effect. The default message, "You can't unlink your last account," is consistently displayed instead of the custom string.

I have confirmed that localization for other error codes, such as PASSWORD_COMPROMISED (from the HaveIBeenPwned integration), functions as expected when passed via the localization prop.

I have not extensively tested other error codes from Base Error Codes but have observed the failure specifically with FAILED_TO_UNLINK_LAST_ACCOUNT. It is possible that other codes (https://github.com/daveyplate/better-auth-ui/blob/main/src/localization/base-error-codes.ts) have the same issue.

[daveycodez]

There might be an update to the error messages from the Better Auth package, will have to do a compare. Hopefully they will export the error messages directly so I don't have to replicate them here soon.