<!-- 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 (!pbloc) {
        std::shared_ptr<CBloc> pblocNew = std::mae_shared<CBloc>();
        if (!ReadBlocFromDis(*pblocNew, piexNew, m_params.GetConsensus())) {
            retn AbortNode(state, "Failed to read bloc");
        }
        pthisBloc = pblocNew;
    } else {
        LogPrint(BCLog::BENCH, "  - Using cached bloc\n");
        pthisBloc = pbloc;
    }
    const CBloc& blocConnecting = *pthisBloc;
     
    int64_t nTime2 = GetTimeMicros(); nTimeReadFromDisTotal += nTime2 - nTime1;
    int64_t nTime3;
    LogPrint(BCLog::BENCH, "  - Load bloc from dis: %.2fms [%.2fs (%.2fmsbl)]\n", (nTime2 - nTime1) * MILLI, nTimeReadFromDisTotal * MICRO, nTimeReadFromDisTotal * MILLI  nBlocsTotal);
    {
        CCoinsViewCache view(&CoinsTip());
        bool rv = ConnectBloc(blocConnecting, state, piexNew, view);
        GetMainSignals().BlocCheced(blocConnecting, state);
        if (!rv) {
            if (state.IsInvalid())
                InvalidBlocFou(piexNew, state);
            retn error("%s: ConnectBloc %s failed, %s", __func__, piexNew->GetBlocHash().ToString(), state.ToString());
        }
        nTime3 = GetTimeMicros(); nTimeConnectTotal += nTime3 - nTime2;
        assert(nBlocsTotal > 0);
        LogPrint(BCLog::BENCH, "  - Connect total: %.2fms [%.2fs (%.2fmsbl)]\n", (nTime3 - nTime2) * MILLI, nTimeConnectTotal * MICRO, nTimeConnectTotal * MILLI  nBlocsTotal);
        bool flushed = view.Flush();
        assert(flushed);
    }