<!-- 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.

{
    SetMockTime(0s); 
    LogInstance().DisconnectTestLogger();
    fs::remove_all(m_path_root);
    gArgs.ClearArgs();
    ECC_Stop();
}
ChainTestingSetup::ChainTestingSetup(const std::string& chainName, const std::vector<const char*>& extra_args)
    : BasicTestingSetup(chainName, extra_args)
{
    
    
    m_node.scheduler = std::make_unique<CScheduler>();
    m_node.scheduler->m_service_thread = std::thread(util::TraceThread, "scheduler", [&] { m_node.scheduler->serviceQueue(); });
    GetMainSignals().RegisterBackgroundSignalScheduler(*m_node.scheduler);
    m_node.fee_estimator = std::make_unique<CBlockPolicyEstimator>();
    m_node.mempool = std::make_unique<CTxMemPool>(m_node.fee_estimator.get(), 1);
    m_cache_sizes = CalculateCacheSizes(m_args);
    m_node.chainman = std::make_unique<ChainstateManager>();
    m_node.chainman->m_blockman.m_block_tree_db = std::make_unique<CBlockTreeDB>(m_cache_sizes.block_tree_db, true);
    
    constexpr int script_check_threads = 2;
    StartScriptCheckWorkerThreads(script_check_threads);
    g_parallel_script_checks = true;
}
ChainTestingSetup::~ChainTestingSetup()