<!-- 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.

{
    
    if (argc != 2) {
        std::cerr
            << "Usage: " << argv[0] << " DATADIR" << std::endl
            << "Display DATADIR information, and process hex-encoded blocks on standard input." << std::endl
            << std::endl
            << "IMPORTANT: THIS EXECUTABLE IS EXPERIMENTAL, FOR TESTING ONLY, AND EXPECTED TO" << std::endl
            << "           BREAK IN FUTURE VERSIONS. DO NOT USE ON YOUR ACTUAL DATADIR." << std::endl;
        return 1;
    }
    std::filesystem::path abs_datadir = std::filesystem::absolute(argv[1]);
    std::filesystem::create_directories(abs_datadir);
    gArgs.ForceSetArg("-datadir", abs_datadir.string());
    
    SelectParams(CBaseChainParams::MAIN);
    const CChainParams& chainparams = Params();
    init::SetGlobals(); 
    
    
    
    InitSignatureCache();
    InitScriptExecutionCache();
    
    CScheduler scheduler{};
    
    scheduler.m_service_thread = std::thread(util::TraceThread, "scheduler", [&] { scheduler.serviceQueue(); });
    
    scheduler.scheduleEvery(RandAddPeriodic, std::chrono::minutes{1});
    GetMainSignals().RegisterBackgroundSignalScheduler(scheduler);