[clang] [clang][ExprConst] Allow comparisons with string literals (PR #106733)

[Richard Smith via cfe-commits]

zygoloid wrote:

See https://github.com/llvm/llvm-project/issues/58754#issuecomment-2354048986 -- this introduces a miscompile by producing comparison results at compile time that differ from the results at runtime. Please can this be reverted?

https://github.com/llvm/llvm-project/pull/106733