style(engine): fix oxfmt trailing blank line in chunkEncoder test

Author: miguel-heygen

packages/engine/src/services/chunkEncoder.test.ts

@@ -460,7 +460,6 @@ describe("buildEncoderArgs HDR color space", () => {
       expect.stringContaining("HDR is not supported with codec=h264"),
     );
     warnSpy.mockRestore();
-
   });
 
   it("uses range conversion for HDR CPU encoding", () => {