#1287: frame_rate in the Sharpen preview-resolution test's FxCtx (after #1361)

Co-Authored-By: Claude Opus 5.5 <[email protected]>

crates/render/tests/sharpen_preview_res.rs

@@ -18,6 +18,7 @@ fn cx(px_scale: f32) -> FxCtx<'static> {
         clip_name: "x",
         project: None,
         env: None,
+        frame_rate: 24.0,
         working: filmcraft_color::WorkingSpace::Rec709,
     }
 }