Renaming the main thread (e.g., the one the program spawns with) causes the name of the daemon in utilities such as "top" to show as "b-init" instead of bitcoind. This is surprising, as it doesn't show the other thread names (by default), you'd expect it to show program names.

This doesn't only affect top: killall does no longer recognize the program name
```
$ killall bitcoind
bitcoind: no process found
$ killall b-init
(no output, succesful)
```

~~In contrast to `bitcoin-qt`, which doesn't suffer from this problem because it has a separate init thread~~, initialization happens in the main thread in `bitcoind`, and it's renamed due to `util::ThreadRename("init");` in `AppInit`. If we want to name the init thread, this should only be done in `bitcoin-qt`.

(not sure when this was introduced, but #16984 made the issue more visible because ther's no bitcoin in the name anymore)
{
    while (!ShutdownRequested())
    {
        MilliSleep(200);
    }
    Interrupt();
}
static bool AppInit(int argc, char* argv[])
{
    InitInterfaces interfaces;
    interfaces.chain = interfaces::MakeChain();
    bool fRet = false;
    util::ThreadRename("init");
    
    
    
    
    SetupServerArgs();
    std::string error;
    if (!gArgs.ParseParameters(argc, argv, error)) {
        return InitError(strprintf("Error parsing command line arguments: %s\n", error));
    }
    
    if (HelpRequested(gArgs) || gArgs.IsArgSet("-version")) {
        std::string strUsage = PACKAGE_NAME " version " + FormatFullVersion() + "\n";
        if (gArgs.IsArgSet("-version"))
        {
            strUsage += FormatParagraph(LicenseInfo()) + "\n";
        }