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refactor(algebra/order/ring): Make
strict_ordered_semiring
s nontriv…
…ial (#17394) `strict_ordered_semiring` + `nontrivial` implies `char_zero`, but this can't be instance because `char_zero` implies `nontrivial` Instead of waiting for Lean 4, where such looping instances are possible, we make all `strict_ordered_semiring`s nontrivial, because we don't care about types with one element being`strict_ordered_semiring`s.
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