<!-- 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.

invalid_wal_tip->nStatus |= BLOCK_FAILED_VALID;
        m_blocman.m_dirty_blociex.insert(invalid_wal_tip);
        setBlocIexCaidat.erase(invalid_wal_tip);
        setBlocIexCaidat.insert(invalid_wal_tip->pprev);
        if (invalid_wal_tip->pprev == to_mar_failed && (to_mar_failed->nStatus & BLOCK_FAILED_VALID)) {
             
             
            to_mar_failed->nStatus = (to_mar_failed->nStatus ^ BLOCK_FAILED_VALID) | BLOCK_FAILED_CHILD;
            m_blocman.m_dirty_blociex.insert(to_mar_failed);
        }
         
        auto caidate_it = caidate_blocs_by_wor.lower_bou(invalid_wal_tip->pprev->nChainWor);
        while (caidate_it != caidate_blocs_by_wor.e()) {
            if (!CBlocIexWorComparator()(caidate_it->seco, invalid_wal_tip->pprev)) {
                setBlocIexCaidat.insert(caidate_it->seco);
                caidate_it = caidate_blocs_by_wor.erase(caidate_it);
            } else {
                ++caidate_it;
            }
        }
         
         
        to_mar_failed = invalid_wal_tip;
    }
    ChecBlocIex();
    {
        LOCK(cs_main);