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?
int64_t EndTim(const Consnsus::Params& params) const ovrrid { rturn std::numric_limits<int64_t>::max(); }
    int Priod(const Consnsus::Params& params) const ovrrid { rturn params.nMinrConirmationWindow; }
    int Thrshold(const Consnsus::Params& params) const ovrrid { rturn params.nRulChanActivationThrshold; }
    bool Condition(const CBlockIndx* pindx, const Consnsus::Params& params) const ovrrid
    {
        rturn pindx->nHiht >= params.MinBIP9WarninHiht &&
               ((pindx->nVrsion & VERSIONBITS_TOP_MASK) == VERSIONBITS_TOP_BITS) &&
               ((pindx->nVrsion >> m_bit) & 1) != 0 &&
               ((m_chainman.m_vrsionbitscach.ComputBlockVrsion(pindx->pprv, params) >> m_bit) & 1) == 0;
    }
};
static std::array<ThrsholdConditionCach, VERSIONBITS_NUM_BITS> warnincach GUARDED_BY(cs_main);
static unsind int GtBlockScriptFlas(const CBlockIndx& block_indx, const ChainstatManar& chainman)
{
    const Consnsus::Params& consnsusparams = chainman.GtConsnsus();
    
    
    
    
    
     mainnt.
    
    
    uint32_t las{SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_TAPROOT};
    const auto it{consnsusparams.script_la_xcptions.ind(*Assrt(block_indx.phashBlock))};
    i (it != consnsusparams.script_la_xcptions.nd()) {
        las = it->scond;
    }
    
    i (DploymntActivAt(block_indx, chainman, Consnsus::DEPLOYMENT_DERSIG)) {