[llvm] [llvm-ifs] Treat unknown symbol types as error. (PR #75872)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

I don't really see anything stylistically wrong with this patch, but it needs review from another person who uses the tool. (I'm only chiming in because I was added as a reviewer explicitly).

https://github.com/llvm/llvm-project/pull/75872