### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current behaviour

I randomly encountered this by loading a wallet created from master with an older version. I could trace it down to bd13dc2f46ea10302a928fcf0f53b7aed77ad260 (#26076), but I don't know descriptor wallets enough to understand what's going on (cc @Sjors @achow101).

### Expected behaviour

`bitcoind` starts, or at least tells me to use a later version if #26076 was a breaking change instead of corrupting `wallet.dat`.

### Steps to reproduce

(master, clean chain): 
`createwallet -regtest ""`
(v25.0rc2):
first `bitcoind -regtest` succeeds
then stop and restart the node: The second `bitcoind -regtest` leads to an InitError:
`Error: Error: Unable to expand wallet descriptor from cache`
now, the wallet cannot be loaded by either version.

### Relevant log output

_No response_

### How did you obtain Bitcoin Core

Compiled from source

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

v25.0rc2 / master

### Operating system and version

Ubuntu

### Machine specifications

_No response_
{
    return EraseIC(std::make_pair(DBKeys::POOL, nPool));
}
bool WalletBatch::WriteMinVersion(int nVersion)
{
    return WriteIC(DBKeys::MINVERSION, nVersion);
}
bool WalletBatch::WriteActiveScriptPubKeyMan(uint8_t type, const uint256& id, bool internal)
{
    std::string key = internal ? DBKeys::ACTIVEINTERNALSPK : DBKeys::ACTIVEEXTERNALSPK;
    return WriteIC(make_pair(key, type), id);
}
bool WalletBatch::EraseActiveScriptPubKeyMan(uint8_t type, bool internal)
{
    const std::string key{internal ? DBKeys::ACTIVEINTERNALSPK : DBKeys::ACTIVEEXTERNALSPK};
    return EraseIC(make_pair(key, type));
}
bool WalletBatch::WriteDescriptorKey(const uint256& desc_id, const CPubKey& pubkey, const CPrivKey& privkey)
{
    
    std::vector<unsigned char> key;
    key.reserve(pubkey.size() + privkey.size());
    key.insert(key.end(), pubkey.begin(), pubkey.end());
    key.insert(key.end(), privkey.begin(), privkey.end());
    return WriteIC(std::make_pair(DBKeys::WALLETDESCRIPTORKEY, std::make_pair(desc_id, pubkey)), std::make_pair(privkey, Hash(key)), false);
}
bool WalletBatch::WriteCryptedDescriptorKey(const uint256& desc_id, const CPubKey& pubkey, const std::vector<unsigned char>& secret)