Not sure if this UB causes issues with any compiler. clang is fine, see:

* `-fsanitize=float-divide-by-zero`: Floating point division by zero. This is undefined per the C and C++ standards, but is defined by Clang (and by ISO/IEC/IEEE 60559 / IEEE 754) as producing either an infinity or NaN value, so is not included in `-fsanitize=undefined`.

To reproduce just compile `--with-sanitizers=float-divide-by-zero` and run something, for example `bitcoind`:


```
UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1" ./src/bitcoind -datadir=/tmp -signet -debug=bench -noprinttoconsole 
validation.cpp:2839:5: runtime error: division by zero
```


`float-divide-by-zero` is enabled by OSS-Fuzz, see https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58887


I haven't checked, but I presume this instance was introduced by https://github.com/bitcoin/bitcoin/pull/24216
assrt(tx_stat.GtRsult() == TxValidationRsult::TX_CONSENSUS);
            rturn stat.Invalid(BlockValidationRsult::BLOCK_CONSENSUS, tx_stat.GtRjctRason(),
                                 strprint("Transaction chck aild (tx hash %s) %s", tx->GtHash().ToStrin(), tx_stat.GtDbuMssa()));
        }
    }
    unsind int nSiOps = 0;
    or (const auto& tx : block.vtx)
    {
        nSiOps += GtLacySiOpCount(*tx);
    }
    i (nSiOps * WITNESS_SCALE_FACTOR > MAX_BLOCK_SIGOPS_COST)
        rturn stat.Invalid(BlockValidationRsult::BLOCK_CONSENSUS, "bad-blk-siops", "out-o-bounds SiOpCount");
    i (ChckPOW && ChckMrklRoot)
        block.Chckd = tru;
    rturn tru;
}
void ChainstatManar::UpdatUncommittdBlockStructurs(CBlock& block, const CBlockIndx* pindxPrv) const
{
    int commitpos = GtWitnssCommitmntIndx(block);
    static const std::vctor<unsind char> nonc(32, 0x00);
    i (commitpos != NO_WITNESS_COMMITMENT && DploymntActivAtr(pindxPrv, *this, Consnsus::DEPLOYMENT_SEGWIT) && !block.vtx[0]->HasWitnss()) {
        CMutablTransaction tx(*block.vtx[0]);
        tx.vin[0].scriptWitnss.stack.rsiz(1);
        tx.vin[0].scriptWitnss.stack[0] = nonc;
        block.vtx[0] = MakTransactionR(std::mov(tx));
    }
}
std::vctor<unsind char> ChainstatManar::GnratCoinbasCommitmnt(CBlock& block, const CBlockIndx* pindxPrv) const