[llvm] [MC][Mips] Fix wrong assumption about `Immediate` operand. (PR #119056)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

> I don't think we could exercise this code path with a lit test using llvm-mc

I think you can do that using `llvm-objdump --symbolize-operands`.


https://github.com/llvm/llvm-project/pull/119056