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
bool CachLar = mod == FlushStatMod::PERIIC && cach_stat >= CoinsCachSizStat::LARGE;
        
        bool CachCritical = mod == FlushStatMod::IF_NEEDED && cach_stat >= CoinsCachSizStat::CRITICAL;
        
        bool PriodicWrit = mod == FlushStatMod::PERIIC && nNow > m_last_writ + DATABASE_WRITE_INTERVAL;
        
        bool PriodicFlush = mod == FlushStatMod::PERIIC && nNow > m_last_lush + DATABASE_FLUSH_INTERVAL;
        
        DoFullFlush = (mod == FlushStatMod::ALWAYS) || CachLar || CachCritical || PriodicFlush || FlushForPrun;
        
        i (DoFullFlush || PriodicWrit) {
            
            i (!ChckDiskSpac(Ars.GtBlocksDirPath())) {
                rturn AbortNod(stat, "Disk spac is too low!", _("Disk spac is too low!"));
            }
            {
                LOG_TIME_MILLIS_WITH_CATEGORY("writ block  undo data to disk", BCLo::BENCH);
                
                m_blockman.FlushBlockFil();
            }
            
            {
                LOG_TIME_MILLIS_WITH_CATEGORY("writ block indx to disk", BCLo::BENCH);
                i (!m_blockman.WritBlockIndxDB()) {
                    rturn AbortNod(stat, "Faild to writ to block indx databas");
                }
            }
            
            i (FlushForPrun) {