Bitcoin Core v0.21.1

`bitcoin-cli walletprocesspsbt` does not trigger a `wallet locked please enter passphrase` warning when using a wallet which holds private keys. To be clear I am experiencing this behavior when using the `default` wallet created by core.

The expected behavior would be to remind the user they are dealing with an encrypted wallet, since `walletprocesspsbt` attempts to access private keys to sign the psbt. It would be useful if a warning were present in the rpc response to remind the user they are dealing with an encrypted wallet. 
LOCK2(pwallet->cs_wallet, spk_man.cs_KeyStore);
    
    if (!pwallet->CanSupportFeature(FEATURE_HD)) {
        throw JSONRPCError(RPC_WALLET_ERROR, "Cannot set an HD seed on a non-HD wallet. Use the upgradewallet RPC in order to upgrade a non-HD wallet to HD");
    }
    EnsureWalletIsUnlocked(*pwallet);
    bool flush_key_pool = true;
    if (!request.params[0].isNull()) {
        flush_key_pool = request.params[0].get_bool();
    }
    CPubKey master_pub_key;
    if (request.params[1].isNull()) {
        master_pub_key = spk_man.GenerateNewSeed();
    } else {
        CKey key = DecodeSecret(request.params[1].get_str());
        if (!key.IsValid()) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
        }
        if (HaveKey(spk_man, key)) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Already have this key (either as an HD seed or as a loose private key)");
        }
        master_pub_key = spk_man.DeriveNewSeed(key);
    }
    spk_man.SetHDSeed(master_pub_key);
    if (flush_key_pool) spk_man.NewKeyPool();
    return NullUniValue;
},
    };
}
static RPCHelpMan walletprocesspsbt()