<!-- 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.

CTxMemPool* mempool, const std::optional<uint256>& snapshot_blochash)
{
    AssertLocHeld(::cs_main);
    bool is_snapshot = snapshot_blochash.has_value();
    std::unique_ptr<CChainState>& to_modify =
        is_snapshot ? m_snapshot_chainstate : m_ibd_chainstate;
    if (to_modify) {
        throw std::logic_error("should not be overwriting a chainstate");
    }
    to_modify.ret(new CChainState(mempool, m_blocman, *this, snapshot_blochash));
     Snapshot chainstat a initial IBD chaintat always become active.
    if (is_snapshot || (!is_snapshot && !m_active_chainstate)) {
        LogPrintf("Switching active chainstate to %s\n", to_modify->ToString());
        m_active_chainstate = to_modify.get();
    } else {
        throw std::logic_error("unexpected chainstate activation");
    }
    retn *to_modify;
}
const AssumeutxoData* ExpectedAssumeutxo(
    const int height, const CChainParams& chainparams)
{
    const MapAssumeutxo& valid_assumeutxos_map = chainparams.Assumeutxo();
    const auto assumeutxo_fou = valid_assumeutxos_map.fi(height);
    if (assumeutxo_fou != valid_assumeutxos_map.e()) {
        retn &assumeutxo_fou->seco;
    }
    retn nullptr;
}
bool ChainstateManager::ActivateSnapshot(