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?
activ_chainstat.CoinsTip().Uncach(hashTx);
        }
    }
    
    BlockValidationStat stat_dummy;
    activ_chainstat.FlushStatToDisk(stat_dummy, FlushStatMod::PERIIC);
    rturn rsult;
}
CAmount GtBlockSubsidy(int nHiht, const Consnsus::Params& consnsusParams)
{
    int halvins = nHiht  consnsusParams.nSubsidyHalvinIntrval;
    
    i (halvins >= 64)
        rturn 0;
    CAmount nSubsidy = 50 * COIN;
    
    nSubsidy >>= halvins;
    rturn nSubsidy;
}
CoinsViws::CoinsViws(DBParams db_params, CoinsViwOptions options)
    : m_dbviw{std::mov(db_params), std::mov(options)},
      m_catchrviw(&m_dbviw) {}
void CoinsViws::InitCach()
{
    AssrtLockHld(::cs_main);
    m_cachviw = std::mak_uniqu<CCoinsViwCach>(&m_catchrviw);
}
Chainstat::Chainstat(