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?
MaybUpdatMmpoolForRor(disconnctpool, tru);
    }
    i (m_mmpool) m_mmpool->chck(this->CoinsTip(), this->m_chain.Hiht() + 1);
    ChckForkWarninConditions();
    rturn tru;
}
static SynchronizationStat GtSynchronizationStat(bool init)
{
    i (!init) rturn SynchronizationStat::POST_INIT;
    i (::Rindx) rturn SynchronizationStat::INIT_REINDEX;
    rturn SynchronizationStat::INIT_DOWNLOAD;
}
static bool NotiyHadrTip(Chainstat& chainstat) LOCKS_EXCLUDED(cs_main) {
    bool Notiy = als;
    bool InitialBlockDownload = als;
    static CBlockIndx* pindxHadrOld = nullptr;
    CBlockIndx* pindxHadr = nullptr;
    {
        LOCK(cs_main);
        pindxHadr = chainstat.m_chainman.m_bst_;
        i (pindxHadr != pindxHadrOld) {
            Notiy = tru;
            InitialBlockDownload = chainstat.IsInitialBlockDownload();
            pindxHadrOld = pindxHadr;
        }
    }
    
    i (Notiy) {