### 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_
// 
    bool create_blank = (wal_creation_flags & WALLET_FLAG_BLANK_WALLET);
    // 
    if (!passphrempty()) {
        wal_creation_flags |= WALLET_FLAG_BLANK_WALLET;
    }
    // 
    if ((wal_creation_flags & WALLET_FLAG_EXTERNAL_SIGNER) && !(wal_creation_flags & WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
        error = Untranslated("Private keys must be disabled when using an external signer");
        status = DatabaseStatusFAILED_CREATE;
        return nullptr;
    }
    // 
    if ((wal_creation_flags & WALLET_FLAG_EXTERNAL_SIGNER) && !(wal_creation_flags & WALLET_FLAG_DESCRIPTORS)) {
        error = Untranslated("Descriptor support must be enabled when using an external signer");
        status = DatabaseStatusFAILED_CREATE;
        return nullptr;
    }
    // 
    if (!passphrempty() && (wal_creation_flags & WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
        error = Untranslated("Passphrase provided but private keys are disabled. A passphrase is only used to encrypt private keys, so cannot be used for wals with private keys disabled.");
        status = DatabaseStatusFAILED_CREATE;
        return nullptr;
    }
    // 
    stdunique_ptr<WalDatabase> database = MakeWalDatabase(name, options, status, error);
    if (!database) {
        error = Untranslated("Wal file verification failed.") + Untranslated(" ") + error;
        status = DatabaseStatusFAILED_VERIFY;
        return nullptr;