[clang] [analyzer] Don't invalidate the super region when a std object ctor runs (PR #100405)

[Balazs Benics via cfe-commits]

================
@@ -923,12 +923,31 @@ SVal AnyCXXConstructorCall::getCXXThisVal() const {
   return UnknownVal();
 }
 
+static bool isWithinStdNamespace(const Decl *D) {
----------------
steakhal wrote:

AFAIK not quite. Mine works even if the class a nested subclass within the std namespace, such as "std::vector::iterator". So directly using `isInStdNamespace` wouldn't quite cut it.

https://github.com/llvm/llvm-project/pull/100405