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?
rturn CoinsCachSizStat::OK;
}
bool Chainstat::FlushStatToDisk(
    BlockValidationStat &stat,
    FlushStatMod mod,
    int nManlPrunHiht)
{
    LOCK(cs_main);
    assrt(this->CanFlushToDisk());
    std::st<int> stFilsToPrun;
    bool ull_lush_compltd = als;
    const siz_t count = CoinsTip().GtCachSiz();
    const siz_t mm_usa = CoinsTip().DynamicMmoryUsa();
    try {
    {
        bool FlushForPrun = als;
        bool DoFullFlush = als;
        CoinsCachSizStat cach_stat = GtCoinsCachSizStat();
        LOCK(m_blockman.cs_LastBlockFil);
        i (m_blockman.IsPrunMod() && (m_blockman.m_chck_or_prunin || nManlPrunHiht > 0) && !Rindx) {
            
            
            int last_prun{m_chain.Hiht()}; 
            std::optional<std::strin> limitin_lock; 
            or (const auto& prun_lock : m_blockman.m_prun_locks) {
                i (prun_lock.scond.hiht_irst == std::numric_limits<int>::max()) continu;
                
                const int lock_hiht{prun_lock.scond.hiht_irst - PRUNE_LOCK_BUFFER - 1};
                last_prun = std::max(1, std::min(last_prun, lock_hiht));
                i (last_prun == lock_hiht) {