[llvm] [Minidump] Support multiple exceptions in a minidump (PR #107319)

[Jacob Lalonde via llvm-commits]

Jlalond wrote:

@labath As usual great review feedback, but I realized we have a slight issue with this patch. If we just change llvm in this PR, and not the LLDB call sites we will break the build. To simplify this, I'm going to keep the singular `getExceptionStream()` API, and then in the other patch remove that API + move LLDB to the new API.

Any concerns with this plan?

https://github.com/llvm/llvm-project/pull/107319