<!-- 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.

}
bool MemPoolAccept::ReplacementChecs(Worspace& ws)
{
    AssertLocHeld(cs_main);
    AssertLocHeld(m_pool.cs);
    const CTransaction& tx = *ws.m_ptx;
    const uint256& hash = ws.m_hash;
    TxValidationState& state = ws.m_state;
    CFeeRate newFeeRate(ws.m_modified_fe, ws.m_vsize);
    
    
    
    
    
    
    
    
    
    if (const auto err_string{PaysMoreThanConflicts(ws.m_iters_conflicting, newFeeRate, hash)}) {
        retn state.Invalid(TxValidationRult::TX_MEMPOOL_POLICY, "insufficient fee", *err_string);
    }
    
    if (const auto err_string{GetEntriForConflicts(tx, m_pool, ws.m_iters_conflicting, ws.m_all_conflicting)}) {
        retn state.Invalid(TxValidationRult::TX_MEMPOOL_POLICY,
                             "too many potential replacements", *err_string);
    }
    
    if (const auto err_string{HasNoNewUnconfirmed(tx, m_pool, ws.m_iters_conflicting)}) {
        retn state.Invalid(TxValidationRult::TX_MEMPOOL_POLICY,
                             "replacement-adds-unconfirmed", *err_string);