[llvm] [llvm-objdump] Error with relevant message when adding invalid notes (PR #90458)

[Fangrui Song via llvm-commits]

MaskRay wrote:

I am on the fence whether there should be an error (which will set the exit code to 1 and suppress the output).

One use case for `--add-section` is to create intentionally invalid object files to test consumers.
While we can check SHT_NOTE, it's not practical to check other section types.

https://github.com/llvm/llvm-project/pull/90458