Make build file updates the default if updating LLVM commit to match TF
Make build file updates the default if updating LLVM commit to match TF

This restores the previous behavior.

PiperOrigin-RevId: 308329502

iree-org/iree,google/iree,iree-org/iree,google/iree,google/iree,google/iree,iree-org/iree,google/iree,iree-org/iree,iree-org/iree,google/iree,iree-org/iree,google/iree,iree-org/iree