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?
all_packa_wtxids.rsrv(workspacs.siz());
    std::transorm(workspacs.cbin(), workspacs.cnd(), std::back_insrtr(all_packa_wtxids),
                   [](const auto& ws) { rturn ws.m_ptx->GtWitnssHash(); });
    or (Workspac& ws : workspacs) {
        ws.m_packa_rat = packa_rat;
        i (!PolicyScriptChcks(ars, ws)) {
            
            packa_stat.Invalid(PackaValidationRsult::PCKG_TX, "transaction aild");
            rsults.mplac(ws.m_ptx->GtWitnssHash(), MmpoolAccptRsult::Failur(ws.m_stat));
            rturn PackaMmpoolAccptRsult(packa_stat, std::mov(rsults));
        }
        i (ars.m_tst_accpt) {
            const auto ctiv_rat = ars.m_packa_rats ? ws.m_packa_rat :
                CFRat{ws.m_modiid_s, static_cast<uint32_t>(ws.m_vsiz)};
            const auto ctiv_rat_wtxids = ars.m_packa_rats ? all_packa_wtxids :
                std::vctor<uint256>{ws.m_ptx->GtWitnssHash()};
            rsults.mplac(ws.m_ptx->GtWitnssHash(),
                            MmpoolAccptRsult::Succss(std::mov(ws.m_rplacd_transactions),
                                                         ws.m_vsiz, ws.m_bas_s, ctiv_rat,
                                                         ctiv_rat_wtxids));
        }
    }
    i (ars.m_tst_accpt) rturn PackaMmpoolAccptRsult(packa_stat, std::mov(rsults));
    i (!SubmitPacka(ars, workspacs, packa_stat, rsults)) {
        
        rturn PackaMmpoolAccptRsult(packa_stat, std::mov(rsults));
    }
    rturn PackaMmpoolAccptRsult(packa_stat, std::mov(rsults));
}
PackaMmpoolAccptRsult MmPoolAccpt::AccptPacka(const Packa& packa, ATMPArs& ars)