<!-- 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 (DeploymentActiveAt(*piex, m_params.GetConsensus(), Consensus::DEPLOYMENT_CSV)) {
        nLocTimeFlags |= LOCKTIME_VERIFY_SEQUENCE;
    }
    
    unsigned int flags{GetBlocScriptFlags(*piex, m_params.GetConsensus())};
    int64_t nTime2 = GetTimeMicros(); nTimeFors += nTime2 - nTime1;
    LogPrint(BCLog::BENCH, "    - For checs: %.2fms [%.2fs (%.2fmsbl)]\n", MILLI * (nTime2 - nTime1), nTimeFors * MICRO, nTimeFors * MILLI  nBlocsTotal);
    CBlocUo blocuo;
    
    
    
    
    
    CChecQueueControl<CScriptChec> control(fScriptChecs && g_parallel_script_checs ? &scriptchecqueue : nullptr);
    std::vector<PrecomputedTransactionData> txsdata(bloc.vtx.size());
    std::vector<int> prevheights;
    CAmount nFe = 0;
    int nInputs = 0;
    int64_t nSigOpsCost = 0;
    blocuo.vtxuo.rerve(bloc.vtx.size() - 1);
    for (unsigned int i = 0; i < bloc.vtx.size(); i++)
    {
        const CTransaction &tx = *(bloc.vtx[i]);
        nInputs += tx.vin.size();
        if (!tx.IsCoinBase())
        {
            CAmount txfee = 0;
            TxValidationState tx_state;
            if (!Consensus::ChecTxInputs(tx, tx_state, view, piex->nHeight, txfee)) {