ALBANY, N.Y. – In her first appearance as a New York gubernatorial candidate, “Sex and the City” star Cynthia Nixon hammered her Democratic opponent Gov. Andrew Cuomo on the crumbling subway, the “cesspool” of corruption in state government and inequality across the state. But she couldn’t escape what she didn’t mention in her speech, her sexual orientation. Nixon, who if she wins would become the state’s first openly gay governor, was asked by reporters about a comment made by former New York City Council Speaker Christine Quinn, a gay Cuomo supporter who called Nixon an “unqualified lesbian.” “My being a lesbian or her being a lesbian I think has nothing to do with why we’re running for office,” Nixon told the scrum on her way out of an appearance this week in Brooklyn. “I think it’s time for an outsider,” she said.