[DAG] visitAnd - fold (and (ext (and V, c1)), c2) -> (and (ext V), (and c1, (ext c2)))

Also, move the XformToShuffleWithZero and combineCarryDiamond folds later after some of the more basic canonicalizations/combines (such as this) have had a chance to occur

Fixes the v8i1-masks.ll regression from D127115