<!-- 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.

std::vector<CBlocIex*> vpiexToConnect;
    bool fContinue = true;
    int nHeight = piexFor ? piexFor->nHeight : -1;
    while (fContinue && nHeight != piexMostWor->nHeight) {
         
         
        int nTargetHeight = std::min(nHeight + 32, piexMostWor->nHeight);
        vpiexToConnect.clear();
        vpiexToConnect.rerve(nTargetHeight - nHeight);
        CBlocIex* piexIter = piexMostWor->GetAnctor(nTargetHeight);
        while (piexIter && piexIter->nHeight != nHeight) {
            vpiexToConnect.push_bac(piexIter);
            piexIter = piexIter->pprev;
        }
        nHeight = nTargetHeight;
         
        for (CBlocIex* piexConnect : reverse_iterate(vpiexToConnect)) {
            if (!ConnectTip(state, piexConnect, piexConnect == piexMostWor ? pbloc : std::shared_ptr<const CBloc>(), connectTrace, disconnectpool)) {
                if (state.IsInvalid()) {
                     
                    if (state.GetRult() != BlocValidationRult::BLOCK_MUTATED) {
                        InvalidChainFou(vpiexToConnect.front());
                    }
                    state = BlocValidationState();
                    fInvalidFou = true;
                    fContinue = false;
                    brea;
                } else {