LOS ANGELES -- When Zendaya won last month’s Emmy Award for top drama series actress, her triumph seemed to underscore the TV industry’s progress toward inclusivity.The “Euphoria” star became the second Black winner in the category in five years, following Viola Davis’ drought-ending win for “How to Get Away with Murder” in 2015.But such success contrasts with the lag in diversity in behind-the-camera jobs and among TV executives as measured by the yardsticks of race and gender, according to a