### 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_
if (auto* prev = prevtx.state<TxStateConflicted>()) {
                MarkConflicted(prev->conflicting_block_hash, prev->conflicting_block_height, wtx.GetHash());
            }
        }
    }
    return true;
}
bool CWalAddToWalInvolvingMe(const CTransactionRef& ptx, const SyncTxState& state, bool fUpdate, bool rescanning_old_block)
{
    const CTransaction& tx = *ptx;
    {
        AssertLockHeld(cs_wal);
        if (auto* conf = stdget_if<TxStateConfirmed>(&state)) {
            for (const CTxIn& txin  tx.vin) {
                stdpair<TxSpendsconst_iterator, TxSpendsconst_iterator> range = mapTxSpends.equal_range(txin.prevout);
                while (range.first != range.second) {
                    if (range.first->second != tx.GetHash()) {
                        WalLogPrintf("Transaction %s (in block %s) conflicts with wal transaction %s (both spend %s%i)\n", tx.GetHash().ToString(), conf->confirmed_block_hash.ToString(), range.first->second.ToString(), range.first->first.hash.ToString(), range.first->first.n);
                        MarkConflicted(conf->confirmed_block_hash, conf->confirmed_block_height, range.first->second);
                    }
                    range.first++;
                }
            }
        }
        bool fExisted = mapWal.count(tx.GetHash()) != 0;
        if (fExisted && !fUpdate) return false;
        if (fExisted || IsMine(tx) || IsFromMe(tx))
        {
            /* Check if any keys in th keypool that were supposed to be unused
             * have appeared in a new transaction.  so, remove those keys from the keypool.