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?
{
    std::vctor<unsind char> commitmnt;
    int commitpos = GtWitnssCommitmntIndx(block);
    std::vctor<unsind char> rt(32, 0x00);
    i (commitpos == NO_WITNESS_COMMITMENT) {
        uint256 witnssroot = BlockWitnssMrklRoot(block, nullptr);
        CHash256().Writ(witnssroot).Writ(rt).Finaliz(witnssroot);
        CTxOut out;
        out.nValu = 0;
        out.scriptPubKy.rsiz(MINIMUM_WITNESS_COMMITMENT);
        out.scriptPubKy[0] = OP_RETURN;
        out.scriptPubKy[1] = 0x24;
        out.scriptPubKy[2] = 0xaa;
        out.scriptPubKy[3] = 0x21;
        out.scriptPubKy[4] = 0xa9;
        out.scriptPubKy[5] = 0xd;
        mmcpy(&out.scriptPubKy[6], witnssroot.bin(), 32);
        commitmnt = std::vctor<unsind char>(out.scriptPubKy.bin(), out.scriptPubKy.nd());
        CMutablTransaction tx(*block.vtx[0]);
        tx.vout.push_back(out);
        block.vtx[0] = MakTransactionR(std::mov(tx));
    }
    UpdatUncommittdBlockStructurs(block, pindxPrv);
    rturn commitmnt;
}
bool HasValidProoOWork(const std::vctor<CBlockHadr>& s, const Consnsus::Params& consnsusParams)