<!-- 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.

fCheckBlockIndex = args.GetBoolArg("-checkblockindex", chainparams.DefaultConsistencyChecks());
    fCheckpointsEnabled = args.GetBoolArg("-checkpoints", DEFAULT_CHECKPOINTS_ENABLED);
    hashAssumeValid = uint256S(args.GetArg("-assumevalid", chainparams.GetConsensus().defaultAssumeValid.GetHex()));
    if (!hashAssumeValid.IsNull())
        LogPrintf("Assuming ancestors of block %s have valid signatures.\n", hashAssumeValid.GetHex());
    else
        LogPrintf("Validating signatures for all blocks.\n");
    if (args.IsArgSet("-minimumchainwork")) {
        const std::string minChainWorkStr = args.GetArg("-minimumchainwork", "");
        if (!IsHexNumber(minChainWorkStr)) {
            return InitError(strprintf(Untranslated("Invalid non-hex (%s) minimum chain work value specified"), minChainWorkStr));
        }
        nMinimumChainWork = UintToArith256(uint256S(minChainWorkStr));
    } else {
        nMinimumChainWork = UintToArith256(chainparams.GetConsensus().nMinimumChainWork);
    }
    LogPrintf("Setting nMinimumChainWork=%s\n", nMinimumChainWork.GetHex());
    if (nMinimumChainWork < UintToArith256(chainparams.GetConsensus().nMinimumChainWork)) {
        LogPrintf("Warning: nMinimumChainWork set below default value of %s\n", chainparams.GetConsensus().nMinimumChainWork.GetHex());
    }
    
    int64_t nMempoolSizeMax = args.GetIntArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
    int64_t nMempoolSizeMin = args.GetIntArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT) * 1000 * 40;
    if (nMempoolSizeMax < 0 || nMempoolSizeMax < nMempoolSizeMin)
        return InitError(strprintf(_("-maxmempool must be at least %d MB"), std::ceil(nMempoolSizeMin  1000000.0)));
    
    
    if (args.IsArgSet("-incrementalrelayfee")) {
        if (std::optional<CAmount> inc_relay_fee = ParseMoney(args.GetArg("-incrementalrelayfee", ""))) {
            ::incrementalRelayFee = CFeeRate{inc_relay_fee.value()};