The United Way of Miami-Dade on Tuesday discontinued its funding for boy scouting programs, saying the local Boy Scouts of America affiliate failed to abide by an agreement requiring it to help gay youths cope with their sexuality. In a private meeting, the United Way's board of directors voted unanimously to withhold its yearly funding grant of $480,000 for ''traditional scouting programs,'' according to the agency's spokeswoman, Tamara Klingler. The grant serves primarily to pay the salaries of scout leaders in low-income areas including Little Havana, Liberty City, Homestead and Hialeah. About 4,200 kids, most between ages 6 and 17,...