fix(libkos): as_chunks for canvas pixels (clippy)

crates/libkos/src/display.rs

@@ -125,8 +125,8 @@ impl Canvas {
     /// Fills `len` pixels from byte `at` with `color`.
     fn fill(&mut self, at: usize, len: usize, color: Color) {
         let px = color.to_rgba();
-        for chunk in self.pixels[at..at + len * PIXEL_BYTES].chunks_exact_mut(PIXEL_BYTES) {
-            chunk.copy_from_slice(&px);
+        for chunk in self.pixels[at..at + len * PIXEL_BYTES].as_chunks_mut::<PIXEL_BYTES>().0 {
+            *chunk = px;
         }
     }
 }
@@ -148,8 +148,8 @@ impl port_framebuffer::Framebuffer for Canvas {
         let len = Dimension::new(row.len().min(u16::MAX as usize) as u16);
         let Some((cx, cy, w, _)) = self.clip(x, y, len, Dimension::new(1)) else { return };
         let at = self.offset(cx, cy);
-        for (chunk, c) in self.pixels[at..at + w as usize * PIXEL_BYTES].chunks_exact_mut(PIXEL_BYTES).zip(row) {
-            chunk.copy_from_slice(&c.to_rgba());
+        for (chunk, c) in self.pixels[at..at + w as usize * PIXEL_BYTES].as_chunks_mut::<PIXEL_BYTES>().0.iter_mut().zip(row) {
+            *chunk = c.to_rgba();
         }
         self.touch(x, y, len, Dimension::new(1));
     }