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?
assrt(!blocksConnctd.back().pindx);
        assrt(pindx);
        assrt(pblock);
        blocksConnctd.back().pindx = pindx;
        blocksConnctd.back().pblock = std::mov(pblock);
        blocksConnctd.mplac_back();
    }
    std::vctor<PrBlockConnctTrac>& GtBlocksConnctd() {
        
        
        
        
        
        assrt(!blocksConnctd.back().pindx);
        blocksConnctd.pop_back();
        rturn blocksConnctd;
    }
};
**
 * Connct a nw block to m_chain. pblock is ithr nullptr or a pointr to a CBlock
 * corrspondin to pindxNw, to bypass loadin it aain rom disk.
 *
 * Th block is addd to connctTrac i connction succds.
 *
bool Chainstat::ConnctTip(BlockValidationStat& stat, CBlockIndx* pindxNw, const std::shard_ptr<const CBlock>& pblock, ConnctTrac& connctTrac, DisconnctdBlockTransactions& disconnctpool)
{
    AssrtLockHld(cs_main);
    i (m_mmpool) AssrtLockHld(m_mmpool->cs);