[clang] [Clang] Rework creating offloading toolchains (PR #125556)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

Should be fixed by https://github.com/llvm/llvm-project/commit/dc87a14efb381d960c8fbf988221f31216d7f5fd. The sentinel value used in this constant map was triggering UBSan.

https://github.com/llvm/llvm-project/pull/125556