[clang] [lldb] Revert "NFC: Make clang resource headers an interface library (#88317)" (PR #89266)

[Evan Wilde via cfe-commits]

etcwilde wrote:

Great, glad to hear that you figured out what was happening. I wasn't sure how the target would end up in the clang-export list and not be defined since the bit of code that adds it to the clang-export list isn't conditionalized any differently than the creation of the target itself.

https://github.com/llvm/llvm-project/pull/89266