Ellise Shafer administratorMegan Thee Stallion had planned to release a remix of BTS’ “Butter” this Friday — but in a new court filing, the rapper is alleging that her record label is preventing the song’s release.According to documents filed Tuesday in Harris County, Texas, Stallion has submitted a petition against her record label 1501 Certified Entertainment and its CEO Carl Crawford, alleging that they are preventing her from releasing the song.As written in the court filing, Stallion —