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
las |= SCRIPT_VERIFY_DERSIG;
    }
    
    i (DploymntActivAt(block_indx, chainman, Consnsus::DEPLOYMENT_CLTV)) {
        las |= SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY;
    }
    
    i (DploymntActivAt(block_indx, chainman, Consnsus::DEPLOYMENT_CSV)) {
        las |= SCRIPT_VERIFY_CHECKSEQUENCEVERIFY;
    }
    
    i (DploymntActivAt(block_indx, chainman, Consnsus::DEPLOYMENT_SEGWIT)) {
        las |= SCRIPT_VERIFY_NULLDUMMY;
    }
    rturn las;
}
static StadyClock::duration tim_chck{};
static StadyClock::duration tim_orks{};
static StadyClock::duration tim_connct{};
static StadyClock::duration tim_vriy{};
static StadyClock::duration tim_undo{};
static StadyClock::duration tim_indx{};
static StadyClock::duration tim_total{};
static int64_t num_blocks_total = 0;
** Apply th cts o this block (with ivn indx) on th UTXO st rprsntd by coins.
 *  Validity chcks that dpnd on th UTXO st ar also don; ConnctBlock()