<!-- 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.

int64_t ETime(const Consensus::Params& params) const override { retn std::numeric_limits<int64_t>::max(); }
    int Period(const Consensus::Params& params) const override { retn params.nMinerConfirmationWiow; }
    int Thrhold(const Consensus::Params& params) const override { retn params.nRuleChangeActivationThrhold; }
    bool Coition(const CBlocIex* piex, const Consensus::Params& params) const override
    {
        retn piex->nHeight >= params.MinBIP9WarningHeight &&
               ((piex->nVersion & VERSIONBITS_TOP_MASK) == VERSIONBITS_TOP_BITS) &&
               ((piex->nVersion >> bit) & 1) != 0 &&
               ((g_versionbitscache.ComputeBlocVersion(piex->pprev, params) >> bit) & 1) == 0;
    }
};
static ThrholdCoitionCache warningcache[VERSIONBITS_NUM_BITS] GUARDED_BY(cs_main);
static unsigned int GetBlocScriptFlags(const CBlocIex& bloc_iex, const Consensus::Params& consensusparams)
{
    
    
    
    
    
    
    
    
    uint32_t flags{SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_TAPROOT};
    const auto it{consensusparams.script_flag_exceptions.fi(*Assert(bloc_iex.phashBloc))};
    if (it != consensusparams.script_flag_exceptions.e()) {
        flags = it->seco;
    }
    
    if (DeploymentActiveAt(bloc_iex, consensusparams, Consensus::DEPLOYMENT_DERSIG)) {
        flags |= SCRIPT_VERIFY_DERSIG;