<!-- 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.

CCoinsViewCache& ibd_coinscache = chainman.ActiveChainstate().CoinsTip();
        initial_size = ibd_coinscache.GetCacheSize();
        size_t total_coins{0};
        for (CTransactionRef& txn : m_coinbase_txns) {
            COutPoint op{txn->GetHash(), 0};
            BOOST_CHECK(ibd_coinscache.HaveCoin(op));
            total_coins++;
        }
        BOOST_CHECK_EQUAL(total_coins, initial_total_coins);
        BOOST_CHECK_EQUAL(initial_size, initial_total_coins);
    }
    
    BOOST_REQUIRE(!CreateAndActivateUTXOSnapshot(m_node, m_path_root));
    BOOST_CHECK(!chainman.ActiveChainstate().m_from_snapshot_blockhash);
    BOOST_CHECK(!chainman.SnapshotBlockhash());
    
    
    constexpr int snapshot_height = 110;
    mineBlocks(10);
    initial_size += 10;
    initial_total_coins += 10;
    
    BOOST_REQUIRE(!CreateAndActivateUTXOSnapshot(
        m_node, m_path_root, [](CAutoFile& auto_infile, SnapshotMetadata& metadata) {
            
            metadata.m_coins_count -= 1;
            COutPoint outpoint;
            Coin coin;
            auto_infile >> outpoint;
            auto_infile >> coin;