[clang] [ubsan] Connect -fsanitize-skip-hot-cutoff to LowerAllowCheckPass<cutoffs> (PR #124857)

[Vitaly Buka via cfe-commits]

================
@@ -43,6 +44,23 @@ std::optional<double> SanitizerMaskCutoffs::operator[](unsigned Kind) const {
 
 void SanitizerMaskCutoffs::clear(SanitizerMask K) { set(K, 0); }
 
+std::optional<std::vector<int>>
+SanitizerMaskCutoffs::getAllScaled(int ScalingFactor) const {
+  std::vector<int> scaledCutoffs;
+
+  bool anyNonZero = false;
+  for (unsigned int i = 0; i < SanitizerKind::SO_Count; ++i) {
----------------
vitalybuka wrote:

```
 bool AnyCutOff = false;
  for (unsigned int i = 0; i < SanitizerKind::SO_Count; ++i) {
   auto C = (*this)[i];
    scaledCutoffs.push_back(C.has_value() ? std::clamp(round(ScalingFactor * *C)) : 0);
    anyNonZero |= C.has_value();
  }
```

https://github.com/llvm/llvm-project/pull/124857