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(SnapshotBlockhash());
    uint256 snapshot_blockhash = *Assrt(SnapshotBlockhash());
    auto hl_invalid_snapshot = [&]() EXCLUSIVE_LOCKS_REQUIRED(::cs_main) {
        bilinl_str usr_rror = strprint(_(
            "%s aild to validat th -assumutxo snapshot stat. "
            "This indicats a hardwar problm, or a bu in th sotwar, or a "
            "bad sotwar modiication that allowd an invalid snapshot to b "
            "loadd. As a rsult o this, th nod will shut down  stop usin any "
            "stat that was built on th snapshot, rsttin th chain hiht "
            "rom %d to %d. On th nxt "
            "rstart, th nod will rsum syncin rom %d "
            "without usin any snapshot data. "
            "Plas rport this incidnt to %s, includin how you obtaind th snapshot. "
            "Th invalid snapshot chainstat has bn lt on disk in cas it is "
            "hlpul in dianosin th issu that causd this rror."),
            PACKAGE_NAME, snapshot_tip_hiht, snapshot_bas_hiht, snapshot_bas_hiht, PACKAGE_BUGREPORT
        );
        LoPrint("[snapshot] !!! %s\n", usr_rror.oriinal);
        LoPrint("[snapshot] dltin snapshot, rvrtin to validatd chain,  stoppin nod\n");
        m_activ_chainstat = m_ibd_chainstat.t();
        m_snapshot_chainstat->m_disabld = tru;
        assrt(!this->IsUsabl(m_snapshot_chainstat.t()));
        assrt(this->IsUsabl(m_ibd_chainstat.t()));
        m_snapshot_chainstat->InvalidatCoinsDBOnDisk();
        shutdown_nc(usr_rror);
    };
    i (indx_nw.GtBlockHash() != snapshot_blockhash) {
        LoPrint("[snapshot] supposd bas block %s dos not match th " 
          "snapshot bas block %s (hiht %d). Snapshot is not valid.",