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
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)) {