Upgrade Smithay to pinned upstream Git

Pin 8a270232f1bfc416c781273c98a3f52a812a0bba and adapt protocol dispatch, input timestamps, configure state and rendering APIs. Preserve custom lock and toplevel validation, compositor-owned key repeats, and valid layer remapping sequences.

Add native icon-buffer lifecycle regressions for the GoLand and Spotify launch failure.

compositor/src/render/corner_tests.rs

@@ -832,6 +832,7 @@ fn window_tint_does_not_inherit_panel_geometry() {
                 geometry,
                 &[Rectangle::from_size(geometry.size)],
                 &[],
+                None,
             )
             .unwrap();
         let _ = frame.finish().unwrap();
@@ -845,6 +846,7 @@ fn window_tint_does_not_inherit_panel_geometry() {
     let output = Output::new(
         "tint-test".into(),
         PhysicalProperties {
+            serial_number: String::new(),
             size: (0, 0).into(),
             subpixel: Subpixel::Unknown,
             make: "test".into(),