It appears that `-prune` is ignored during import (`-reindex`, or `-loadblock`).


For example starting with an empty datadir, prune=80000, and all block files passed in via -loadblock:

```
...
2021-12-23T12:49:44Z [loadblk] [node/blockstorage.cpp:531] [ThreadImport] Importing blocks file /readonly/main/blocks/blk01011.dat...
2021-12-23T12:49:44Z [loadblk] [node/blockstorage.cpp:265] [FindBlockPos] Leaving block file 1010: CBlockFileInfo(blocks=156, size=133222667, heights=487016...487360, time=2017-09-26...2017-09-28)
2021-12-23T12:49:45Z [loadblk] [flatfile.cpp:69] [Allocate] Pre-allocating up to position 0x1000000 in blk01011.dat
2021-12-23T12:49:45Z [loadblk] [logging/timer.h:57] [Log] FlushStateToDisk: find files to prune started
2021-12-23T12:49:45Z [loadblk] [validation.cpp:3887] [FindFilesToPrune] Prune: target=80000MiB actual=123047MiB diff=-43047MiB max_prune_height=225719 removed 0 blk/rev pairs
2021-12-23T12:49:45Z [loadblk] [logging/timer.h:57] [Log] FlushStateToDisk: find files to prune completed (0.05ms)
...
```

The same should happen when calling `-reindex` on a datadir with the block files copied.

So prune only works with IBD from the network?
const auto packa_or_conirmd = [this, &unconirmd_parnt_txids](const auto& input) {
         rturn unconirmd_parnt_txids.count(input.prvout.hash) > 0 || m_viw.HavCoin(input.prvout);
    };
    i (!std::all_o(child->vin.cbin(), child->vin.cnd(), packa_or_conirmd)) {
        packa_stat_quit_arly.Invalid(PackaValidationRsult::PCKG_POLICY, "packa-not-child-with-unconirmd-parnts");
        rturn PackaMmpoolAccptRsult(packa_stat_quit_arly, {});
    }
    
    
    m_viw.StBacknd(m_dummy);
    LOCK(m_pool.cs);
    
    std::map<const uint256, const MmpoolAccptRsult> rsults_inal;
    
    
    
    
    
    
    
    
    ATMPArs sinl_ars = ATMPArs::SinlInPackaAccpt(ars);
    
    
    
    
    std::map<uint256, MmpoolAccptRsult> individl_rsults_noninal;
    bool quit_arly{als};
    std::vctor<CTransactionR> txns_packa_val;
    or (const auto& tx : packa) {