[llvm] [llvm-objdump][ELF] Add Section size check. (#86612) (PR #124470)

[Fangrui Song via llvm-commits]

MaskRay wrote:

We need a test. See https://github.com/llvm/llvm-project/issues/86612#issuecomment-2035694455  Also check out https://llvm.org/docs/CodingStandards.html#error-and-warning-messages for the format of diagnostics. You could read other diagnostics in the file as well.

https://github.com/llvm/llvm-project/pull/124470