[clang] [LifetimeSafety] Introduce buildOriginFlowChain for use-after-scope (PR #199345)

[Utkarsh Saxena via cfe-commits]

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usx95 wrote:

Can you add tests for paren expr

```cpp
std::string s;
std::string_view a = ((s));
std::string_view b = ((a));
// ...
```

https://github.com/llvm/llvm-project/pull/199345