[clang] [WinEH] Fix crash, object unwinding in the except block (PR #172287)

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GkvJwa wrote:

> I would also like to note that using `try{}catch(...){}` instead of `__try{}__except(1){}` is a basically semantically equivalent workaround for this issue.

On Windows, the latter is the SEH.  The `1` can be replaced with actual exceptions(GetExceptionCode() == ?), which the former cannot do. That's why we need to specifically use SEH.

Also, if you have time, review it again. If there are no issues, I will add test.

https://github.com/llvm/llvm-project/pull/172287