That's great news. I imagine that you are a friendly, positive, productive, well respected person in your workplace. People are usually more inclined to be supportive of a person going through transition if they perceive them in a good light, less so if that person is unfriendly, negative and unproductive. It's not 100% given of course, and there have been many awesome people given a hard a time in their work place because of prejudice but it sounds like you have a great workplace.