Steps to reproduce:

* Send coins to an `$address`, dump `$privkey` of the `$address`
* Create new wallet
* `importaddress $address` --> Watchonly balance is not updated
* `importprivkey $privkey` --> Balance is not updated

Needs a restart to get fixed. See also #11477 
{RPCResult::Type::OBJ, "", "",
                        {
                            {RPCResult::Type::BOOL, "success", ""},
                            {RPCResult::Type::ARR, "warnings", /*ue, "",
                            {
                                {RPCResult::Type::STR, "", ""},
                            }},
                            {RPCResult::Type::OBJ, "error", /*ue, "",
                            {
                                {RPCResult::Type::ELISION, "", "JSONRPC error"},
                            }},
                        }},
                    }
                },
                RPCExamples{
                    HelpExampleCli("importmulti", "'[{ \"scriptPubKey\": { \"address\": \"<my address>\" }, \"timestamp\":1455191478 }, "
                                          "{ \"scriptPubKey\": { \"address\": \"<my 2nd address>\" }, \"label\": \"example 2\", \"timestamp\": 1455191480 }]'") +
                    HelpExampleCli("importmulti", "'[{ \"scriptPubKey\": { \"address\": \"<my address>\" }, \"timestamp\":1455191478 }]' '{ \"rescan\": false}'")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& mainRequest) -> UniValue
{
    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(mainRequest);
    if (!pwallet) return NullUniValue;
    CWallet& wallet{*pwallet};
    // 
    // 
    wallet.BlockUntilSyncedToCurrentChain();
    RPCTypeCheck(mainRequest.params, {UniValue::VARR, UniValue::VOBJ});
    EnsureLegacyScriptPubKeyMan(*pwallet, true);
    const UniValue& requests = mainRequest.params[0];