[clang] Thread safety analysis: Fix a bug in handling temporary constructors (PR #74020)

[Aaron Puchert via cfe-commits]

================
@@ -1718,6 +1720,13 @@ struct TestScopedLockable {
     MutexLock{&mu1}, a = 5;
   }
 
+  void temporary2(int x) {
+    if (check(MutexLock{&mu1}) || x) {
+
+    }
----------------
aaronpuchert wrote:

The `if` is probably not needed here, right? We could just write
```suggestion
    check(MutexLock{&mu1}) || x;
```
and should have the same CFG artifact.

https://github.com/llvm/llvm-project/pull/74020