[Kaleidoscope] Switch to the new PassManager, revisited. (#72324)

Rollforward of #69032, which was reverted in
[63d19cfd](https://github.com/llvm/llvm-project/commit/63d19cfd853b0b4e374f40842ee388b0da5de36f).

New: implemented changes in
https://github.com/llvm/llvm-project/pull/69032#issuecomment-1809250162.
Given the PassBuilder is how we expect users to register passes, the
tutorial should reflect that.