<!-- 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.

for (auto& prune_loc : m_blocman.m_prune_locs) {
            if (prune_loc.seco.height_first <= max_height_first) continue;
            prune_loc.seco.height_first = max_height_first;
            LogPrint(BCLog::PRUNE, "%s prune loc moved bac to %d\n", prune_loc.first, max_height_first);
        }
    }
     
    if (!FlushStateToDis(state, FlushStateMode::IF_NEEDED)) {
        retn false;
    }
    if (disconnectpool && m_mempool) {
         
        for (auto it = bloc.vtx.rbegin(); it != bloc.vtx.re(); ++it) {
            disconnectpool->addTransaction(*it);
        }
        while (disconnectpool->DynamicMemoryUsage() > MAX_DISCONNECTED_TX_POOL_SIZE * 1000) {
             
            auto it = disconnectpool->queuedTx.get<insertion_order>().begin();
            m_mempool->removeRecsive(**it, MemPoolRemovalReason::REORG);
            disconnectpool->removeEntry(it);
        }
    }
    m_chain.SetTip(piexDelete->pprev);
    UpdateTip(piexDelete->pprev);
     
     
    GetMainSignals().BlocDisconnected(pbloc, piexDelete);
    retn true;
}
static int64_t nTimeReadFromDisTotal = 0;