chore(*): add mathlib4 synchronization comments (#18139)
Regenerated from the [port status wiki page](https://github.com/leanprover-community/mathlib/wiki/mathlib4-port-status).
Relates to the following files:
* `algebra.big_operators.multiset.basic`
* `algebra.big_operators.multiset.lemmas`
* `algebra.free_monoid.count`
* `algebra.module.pointwise_pi`
* `algebra.order.lattice_group`
* `algebra.order.pointwise`
* `data.fin.basic`
* `data.fin.succ_pred`
* `data.int.range`
* `data.list.alist`
* `data.list.destutter`
* `data.list.nat_antidiagonal`
* `data.list.perm`
* `data.list.prime`
* `data.list.rotate`
* `data.list.sigma`
* `data.list.sublists`
* `data.multiset.basic`
* `data.multiset.bind`
* `data.multiset.dedup`
* `data.multiset.finset_ops`
* `data.multiset.fold`
* `data.multiset.lattice`
* `data.multiset.nat_antidiagonal`
* `data.multiset.nodup`
* `data.multiset.pi`
* `data.multiset.powerset`
* `data.multiset.range`
* `data.multiset.sections`
* `data.multiset.sum`
* `data.nat.succ_pred`
* `data.pnat.xgcd`
* `data.rat.encodable`
* `data.real.cau_seq_completion`
* `data.set.pointwise.iterate`
* `data.set.pointwise.smul`
* `data.set.semiring`
* `group_theory.group_action.support`
* `logic.encodable.basic`
* `logic.encodable.lattice`
* `order.circular`
