[clang] [clang-tools-extra] [compiler-rt] [lldb] [llvm] [NFCI][RTTI][Passes] Make the ID fields const char (PR #179970)

[Jakub Kuderski via cfe-commits]

https://github.com/kuhar commented:

Have you seen this getting misused upstream or in a downstream project?

https://github.com/llvm/llvm-project/pull/179970