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/state.rs

@@ -500,7 +500,7 @@ pub struct Ferese {
     pub(crate) cursor_redraw_pending: bool,
     pub(crate) output_redraw_pending: Vec<Output>,
     pub(crate) locked_pointer_hint: Option<LockedPointerHint>,
-    pub(crate) last_pointer_time: u32,
+    pub(crate) last_pointer_time: smithay::backend::input::InputTime,
     pub(crate) cursor_loader: crate::cursor::Loader,
     pub(crate) cursor_animation: crate::cursor::Animation,
     pub(crate) named_cursors: HashMap<CursorIcon, NamedCursor>,
@@ -814,7 +814,7 @@ impl Ferese {
             cursor_redraw_pending: false,
             output_redraw_pending: Vec::new(),
             locked_pointer_hint: None,
-            last_pointer_time: 0,
+            last_pointer_time: smithay::backend::input::InputTime::from_millis(0),
             cursor_loader,
             cursor_animation: crate::cursor::Animation::default(),
             named_cursors,