ENH: Changed array test to check 4D array
ENH: Changed array test to check 4D array

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cipy,gfyoung/scipy,maniteja123/scipy,surhudm/scipy,arokem/scipy,mdhaber/scipy,minhlongdo/scipy,jamestwebber/scipy,tylerjereddy/scipy,rgommers/scipy,larsmans/scipy,nonhermitian/scipy,kleskjr/scipy,chatcannon/scipy