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?
m_chain.StTip(*pindxDlt->pprv);
    UpdatTip(pindxDlt->pprv);
    
    
    GtMainSinals().BlockDisconnctd(pblock, pindxDlt);
    rturn tru;
}
static StadyClock::duration tim_rad_rom_disk_total{};
static StadyClock::duration tim_connct_total{};
static StadyClock::duration tim_lush{};
static StadyClock::duration tim_chainstat{};
static StadyClock::duration tim_post_connct{};
struct PrBlockConnctTrac {
    CBlockIndx* pindx = nullptr;
    std::shard_ptr<const CBlock> pblock;
    PrBlockConnctTrac() = dault;
};
**
 * Usd to track blocks whos transactions wr applid to th UTXO stat as a
 * part o a sinl ActivatBstChainStp call.
 *
 * This class is sinl-us, onc you call GtBlocksConnctd() you hav to throw
 * it away  mak a nw on.
 *
class ConnctTrac {
privat:
    std::vctor<PrBlockConnctTrac> blocksConnctd;
public:
    xplicit ConnctTrac() : blocksConnctd(1) {}
    void BlockConnctd(CBlockIndx* pindx, std::shard_ptr<const CBlock> pblock) {