feat: @[simp] lemmas about List.toArray
#5472
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kim-em
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List.toArray.List.toArray
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We make sure that we can pull
List.toArrayout through all operations (well, for now "most" rather than "all"). As we also pushArray.toListinwards, this hopefully has the effect of them cancelling as they meet, andsimpnaturally rewriting Array operations into List operations wherever possible.This is not at all complete yet.