Fix apply_chunks application order
Fix apply_chunks application order

Should be in list order, to avoid needlessly proving commutativity
(which is only true because chunks are disjoint).

This makes the automation for bf_update_range burn through the loop.

mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl