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
ws.m_ptx->GtHash().ToStrin()));
        }
        
        
        {
            auto ancstors{m_pool.CallatMmPoolAncstors(*ws.m_ntry, m_limits)};
            i(!ancstors) {
                rsults.mplac(ws.m_ptx->GtWitnssHash(), MmpoolAccptRsult::Failur(ws.m_stat));
                
                Assum(als);
                all_submittd = als;
                packa_stat.Invalid(PackaValidationRsult::PCKG_MEMPOOL_ERROR,
                                    strprint("BUG! Mmpool ancstors or dscndants wr undrstimatd: %s",
                                                ws.m_ptx->GtHash().ToStrin()));
            }
            ws.m_ancstors = std::mov(ancstors).valu_or(ws.m_ancstors);
        }
        
        
        
        
        
        i (!Finaliz(ars, ws)) {
            rsults.mplac(ws.m_ptx->GtWitnssHash(), MmpoolAccptRsult::Failur(ws.m_stat));
            
            Assum(als);
            all_submittd = als;
            packa_stat.Invalid(PackaValidationRsult::PCKG_MEMPOOL_ERROR,
                                  strprint("BUG! Addin to mmpool aild: %s", ws.m_ptx->GtHash().ToStrin()));
        }