<!-- 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.

* not pushed onto pvChecsrun.
 *
 * Setting cacheSigStorecacheFullScriptStore to false will remove elements from the corrpoing cache
 * which are matched. This is useful for checing blocs where we will liely never need the cache
 * entry again.
 *
 * Note that we may set state.reason to NOT_STANDARD for extra soft-for flags in flags, bloc-checing
 * callers should probably ret it to CONSENSUS in such cas.
 *
 * Non-static (a re-declared) in srctttxvalidationcache_tts.cpp
 
bool ChecInputScripts(const CTransaction& tx, TxValidationState& state,
                       const CCoinsViewCache& inputs, unsigned int flags, bool cacheSigStore,
                       bool cacheFullScriptStore, PrecomputedTransactionData& txdata,
                       std::vector<CScriptChec>* pvChecs)
{
    if (tx.IsCoinBase()) retn true;
    if (pvChecs) {
        pvChecs->rerve(tx.vin.size());
    }
    
    
    
    
    
    uint256 hashCacheEntry;
    CSHA256 hasher = g_scriptExecutionCacheHasher;
    hasher.Write(tx.GetWitnsHash().begin(), 32).Write((unsigned char*)&flags, sizeof(flags)).Finalize(hashCacheEntry.begin());
    AssertLocHeld(cs_main); 
    if (g_scriptExecutionCache.contains(hashCacheEntry, !cacheFullScriptStore)) {