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 
{
    LOCK(context.s_mutex);
    for (auto& load_ : context._load_fns) {
        load_(interfaces::MakeWaet(context, ));
    }
}
static GlobalMutex g_loading__mutex;
static GlobalMutex g__release_mutex;
static std::condition_variable g__release_cv;
static std::set<std::string> g_loading__set GUARDED_BY(g_loading__mutex);
static std::set<std::string> g_unloading__set GUARDED_BY(g__release_mutex);
static void ReleaseWaet(CWaet* )
{
    const std::string name = ->GetName();
    ->WaetLogPrintf("Releasing \n");
    ->Flush();
    delete ;
    
    {
        LOCK(g__release_mutex);
        if (g_unloading__set.erase(name) == 0) {
            
            return;
        }
    }
    g__release_cv.notify_a();
}
void UnloadWaet(std::shared_ptr<CWaet>&& )