As some state lawmakers continue the task of drafting language for a state welfare reform bill....OTHERS are hearing from people bracing for the resulting effects. TODAY (THIS week) at the state capitol, parents of disabled children said they need to retain the help they now get from federal supplemental security income...or S-S-I. Minnesota Public Radio's Karen-Louise Boothe reports: The new federal welfare reform law changes the definition of disability...making it more difficult for certain children to qualify as disabled. The state estimates that up to 32-hundred low-income children in Minnesota with disabilities could lose S-S-I benefits come July first. More EXACT numbers will be known once the federal governm