### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current behaviour

crash

### Expected behaviour

no crash

### Steps to reproduce

* Compile 79e8247ddb166f9b980f40249b7372a502402a4d
* Type `migratewallet`

### Relevant log output

```
wallet/scriptpubkeyman.cpp:1915: std::optional<MigrationData> wallet::LegacyScriptPubKeyMan::MigrateToDescriptor(): Assertion `IsMine(desc_spk) != ISMINE_NO' failed.
Aborted (core dumped)
```


### How did you obtain Bitcoin Core

Compiled from source

### What version of Bitcoin Core are you using?

current master

### Operating system and version

Linux

### Machine specifications

_No response_
{
    
    {
        LOCK(cs_KeyStore);
        if (fInternal) {
            setInternalKeyPool.insert(nIndex);
        } else if (!set_pre_split_keypool.empty()) {
            set_pre_split_keypool.insert(nIndex);
        } else {
            setExternalKeyPool.insert(nIndex);
        }
        CKeyID& pubkey_id = m_index_to_reserved_key.at(nIndex);
        m_pool_key_to_index[pubkey_id] = nIndex;
        m_index_to_reserved_key.erase(nIndex);
        NotifyCanGetAddressesChanged();
    }
    WalletLogPrintf("keypool return %d\n", nIndex);
}
bool LegacyScriptPubKeyMan::GetKeyFromPool(CPubKey& result, const OutputType type)