[clang-tools-extra] [lldb] [libcxx] [llvm] [libcxxabi] [clang] [libc] [libc++] Fix the behavior of throwing `operator new` under -fno-exceptions (PR #69498)

[Nikolas Klauser via cfe-commits]

https://github.com/philnik777 edited https://github.com/llvm/llvm-project/pull/69498