You may be dreading the prospect of having to see a feature-length “Dora the Explorer” movie with your kids. I hear ya on that. But fear not: “Dora and the Lost City of Gold” is surprisingly a lot of fun. The movie manages to ride a fine line between being true to the characters and conventions of the series and affectionately skewering them, with a winning performance at its center by the magnetic Isabela Moner. My review, at RogerEbert.com.