It’s a weird month when you’ve got no Broadway tours hitting Warner or National, but still can easily fit in four musicals. And if you’re not a song and dance man (or woman), there’s always three versions of Hamlet to choose from. Welcome to June in D.C. theater! Here are the highlights: About those musicals: Lloyd Webber descends upon D.C., with Kennedy Center staging The Phantom of the Opera (June 20) and Wolf Trap hosting…