Revert "[lldb][modules] Disable Clang Modules in source/Host directory on macOS"

This reverts commit 7cf4ab13af8aa3183e551b3319399cddd9384948 as it was a
temporary workaround that's no longer needed.

GitOrigin-RevId: c7bd61d4a79b88dbd97028bb0a73a73b2d6aca89
1 file changed