<!-- 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.

const CBlockIndex* tip = chainman.ActiveTip();
    BOOST_CHECK_EQUAL(tip->nChainTx, au_data.nChainTx);
    
    uint256 loaded_snapshot_blockhash{*chainman.SnapshotBlockhash()};
    
    
    
    {
        LOCK(::cs_main);
        int chains_tested{0};
        for (CChainState* chainstate : chainman.GetAll()) {
            BOOST_TEST_MESSAGE("Checking coins in " << chainstate->ToString());
            CCoinsViewCache& coinscache = chainstate->CoinsTip();
            
            BOOST_CHECK_EQUAL((unsigned int)0, coinscache.GetCacheSize());
            size_t total_coins{0};
            for (CTransactionRef& txn : m_coinbase_txns) {
                COutPoint op{txn->GetHash(), 0};
                BOOST_CHECK(coinscache.HaveCoin(op));
                total_coins++;
            }
            BOOST_CHECK_EQUAL(initial_size , coinscache.GetCacheSize());
            BOOST_CHECK_EQUAL(total_coins, initial_total_coins);
            chains_tested++;
        }
        BOOST_CHECK_EQUAL(chains_tested, 2);
    }
    
    constexpr size_t new_coins{100};
    mineBlocks(new_coins);