[llvm] AsmPrinter: Emit context error for protected aliases (PR #145271)

[Matt Arsenault via llvm-commits]

arsenm wrote:

290fc1ea114a197ec7ee8f85d8f5a20f49012eec obsoletes, the main difference seems to be this version of the test checks the output instead of just the error 

https://github.com/llvm/llvm-project/pull/145271