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. 
LOCK(pwallet->cs_wallet);
    std::string purpose;
    if (!request.params[0].isNull()) {
        purpose = request.params[0].get_str();
    }
    
    std::set<std::string> label_set;
    for (const std::pair<const CTxDestination, CAddressBookData>& entry : pwallet->m_address_book) {
        if (entry.second.IsChange()) continue;
        if (purpose.empty() || entry.second.purpose == purpose) {
            label_set.insert(entry.second.GetLabel());
        }
    }
    UniValue ret(UniValue::VARR);
    for (const std::string& name : label_set) {
        ret.push_back(name);
    }
    return ret;
},
    };
}
static RPCHelpMan send()
{
    return RPCHelpMan{"send",
        "\nEXPERIMENTAL warning: this call may be changed in future releases.\n"
        "\nSend a transaction.\n",
        {
            {"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The outputs (key-value pairs), where none of the keys are duplicated.\n"
                    "That is, each address can only appear once and there can only be one 'data' object.\n"
                    "For convenience, a dictionary, which holds the key-value pairs directly, is also accepted.",