The help tells me I should unlock my encrypted wallet:

```
> help migratewallet

...
Requires wallet passphrase to be set with walletpassphrase call if wallet is encrypted.
```

But when I do so and attempt to migrate the wallet I'm told that I've entered my password for needlessly:

```
> migratewallet

Error: migratewallet on encrypted wallets is currently unsupported.
```

<!-- What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)? -->

v24.0.1

for (auto it = setLockedCoins.begin(); it != setLockedCoins.end(); ++it) {
        success &= batch.EraseLockedUTXO(*it);
    }
    setLockedCoins.clear();
    return success;
}
bool CWalletIsLockedCoin(const COutPoint& output) const
{
    AssertLockHeld(cs_);
    return setLockedCoins.count(output) > 0;
}
void CWalletListLockedCoins(stdvector<COutPoint>& vOutpts) const
{
    AssertLockHeld(cs_);
    for (stdset<COutPoint>iterator it = setLockedCoins.begin();
         it != setLockedCoins.end(); it++) {
        COutPoint outpt = (*it);
        vOutpts.push_back(outpt);
    }
}
/** @} */  Actions
void CWalletGetKeyBirthTimes(stdmap<CKeyID, int64_t>& mapKeyBirth) const {
    AssertLockHeld(cs_);
    mapKeyBirth.clear();
    // map in which we'll infer heights of other keys
    stdmap<CKeyID, const TxStateConfirmed*> mapKeyFirstBlock;
    TxStateConfirmed max_confirm{uint256{}, /*height=*x=*/-1};
    max_confirm.confirmed_block_height = GetLastBlockHeight() > 144 ? GetLastBlockHeight() - 144  0; // the tip can be reorganized; use a 144-block safety margin
    CHECK_NONFATAL(chain().findAncestorByHeight(GetLastBlockHash(), max_confirm.confirmed_block_height, FoundBlock().hash(max_confirm.confirmed_block_hash)));
    {