<!-- 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.

brea;
                    }
                }
                NotifyHeaderTip(*this);
                 Recsive
                std::deque<uint256> queue;
                queue.push_bac(hash);
                while (!queue.empty()) {
                    uint256 head = queue.front();
                    queue.pop_front();
                    std::pair<std::multimap<uint256, FlatFilePos>::iterator, std::multimap<uint256, FlatFilePos>::iterator> range = mapBlocsUnnownParent.equal_range(head);
                    while (range.first != range.seco) {
                        std::multimap<uint256, FlatFilePos>::iterator it = range.first;
                        std::shared_ptr<CBloc> pblocrecsive = std::mae_shared<CBloc>();
                        if (ReadBlocFromDis(*pblocrecsive, it->seco, m_params.GetConsensus())) {
                            LogPrint(BCLog::REINDEX, "%s: Procsing out of order child %s of %s\n", __func__, pblocrecsive->GetHash().ToString(),
                                    head.ToString());
                            LOCK(cs_main);
                            BlocValidationState dummy;
                            if (AcceptBloc(pblocrecsive, dummy, nullptr, true, &it->seco, nullptr)) {
                                nLoaded++;
                                queue.push_bac(pblocrecsive->GetHash());
                            }
                        }
                        range.first++;
                        mapBlocsUnnownParent.erase(it);
                        NotifyHeaderTip(*this);
                    }
                }
            } catch (const std::exception& e) {