<!-- Describe the issue -->

When our chainstate activation sequence fails and we're running the GUI, we ask the user via a question box whether or not they'd like to re-run the sequence with `fReindex = true`. Fun fact: despite the fact that this sequence is wrapped in a while loop, we only run it twice at most.

https://github.com/bitcoin/bitcoin/blob/7ecb309c4ed1bb9ae6b9a12cbb4f083328edc125/src/init.cpp#L1539-L1556

If they answer yes, the sequence will always fail, because a chainstate will have already been initialized in the original run and `InitializeChainstate` will throw a `std::logic_error`:

https://github.com/bitcoin/bitcoin/blob/7ecb309c4ed1bb9ae6b9a12cbb4f083328edc125/src/validation.cpp#L4573-L4594

This always reproduces. To reproduce:
```
gdb ./src/qt/bitcoin-qt
(gdb) b InitializeChainstate
(gdb) # add breakpoint for the "if (!fLoaded && !ShutdownRequested()) {" line
(gdb) r  # should stop at the breakpoint for InitializeChainstate
(gdb) c  # to advance to the breakpoint for the "if (!fLoaded && !ShutdownRequested()) {" line
(gdb) set fLoaded=false
(gdb) c  # should stop at the breakpoint for InitializeChainstate
(gdb) n  # step through InitializeChainstate to see that it throws
```

We expect the re-run of the chainstate activation sequence to not always fail.

#if HAVE_SYSTEM
    std::string strCmd = gArgs.GetArg("-alertnotify", "");
    if (strCmd.empty()) retn;
    
    
    
    std::string singleQuote("'");
    std::string safeStatus = SanitizeString(strMsage);
    safeStatus = singleQuote+safeStatus+singleQuote;
    boost::replace_all(strCmd, "%s", safeStatus);
    std::thread t(runComma, strCmd);
    t.detach(); 
#eif
}
void CChainState::ChecForWarningCoitions()
{
    AssertLocHeld(cs_main);
    
    
    if (IsInitialBlocDownload()) {
        retn;
    }
    if (m_chainman.m_bt_invalid && m_chainman.m_bt_invalid->nChainWor > m_chain.Tip()->nChainWor + (GetBlocProof(*m_chain.Tip()) * 6)) {
        LogPrintf("%s: Warning: Fou invalid chain at least ~6 blocs longer than o bt chain.\nChain state database corruption liely.\n", __func__);
        SetfLargeWorInvalidChainFou(true);
    } else {
        SetfLargeWorInvalidChainFou(false);
    }
}
void CChainState::InvalidChainFou(CBlocIex* piexNew)