[clang] [lldb] [llvm] [cmake] Build executables with -no_exported_symbols when building Apple toolchain (PR #87684)

[Dave Lee via cfe-commits]

kastiglione wrote:

Thanks for adding this! I've been using `CMAKE_EXE_LINKER_FLAGS` to `-Wl,-no_exported_symbols`, and have had no problems.

https://github.com/llvm/llvm-project/pull/87684