Forward all array PartialOrd to slices - #160996
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I happened to notice that these have had too many
&s since before 1.0 -- it ends up using&[T]: PartialOrdand thus wastefully need to forward to[T]: PartialOrd.So re-written to specify the implementation to which we're trying to delegate explicitly (by writing
<[T] as PartialOrd>) which means we no longer need the&&self[..]-style dance at all since the unsizing coercion will do the right thing.And while I was here delegating stuff, it also delegates the
__chaining_*methods, since those have custom overrides for slices (#138881) and we ought to take advantage of that for arrays too.No LLM used.