Issue #3102402 by Hardik_Patel_12, sathish.redcrackle, hash6,...

Issue #3102402 by Hardik_Patel_12, sathish.redcrackle, hash6, himanshu_sindhwani, swatichouhan012, shaktik, idebr, mrinalini9, kishor_kolekar, priyanka.sahni, ambuj_gupta, lauriii, mayurgajar, snehalgaikwad, alexpott, phenaproxima: Remove weight field from Media Library widget when only single media can be attached

(cherry picked from commit da8e7f68)