[clang] [Clang] only inherit the parent eval context inside of lambdas (PR #124426)

[via cfe-commits]

================
@@ -13108,14 +13109,16 @@ class Sema final : public SemaBase {
               ? ExpressionEvaluationContext::ImmediateFunctionContext
               : ExpressionEvaluationContext::PotentiallyEvaluated);
       if (FD) {
+        auto &Current = S.currentEvaluationContext(),
+             Parent = S.parentEvaluationContext();
----------------
Sirraide wrote:

```suggestion
        auto &Current = S.currentEvaluationContext();
        auto &Parent = S.parentEvaluationContext();
```
I think this is a bit clearer, because I don’t think you meant to copy the parent evaluation context here, right?

https://github.com/llvm/llvm-project/pull/124426