chore: Bump Rust version to 1.80 (#15186)

Release Notes:

- N/A

crates/editor/src/selections_collection.rs

@@ -44,7 +44,7 @@ impl SelectionsCollection {
             buffer,
             next_selection_id: 1,
             line_mode: false,
-            disjoint: Arc::from([]),
+            disjoint: Arc::default(),
             pending: Some(PendingSelection {
                 selection: Selection {
                     id: 0,
@@ -398,7 +398,7 @@ impl<'a> MutableSelectionsCollection<'a> {
     }
 
     pub fn clear_disjoint(&mut self) {
-        self.collection.disjoint = Arc::from([]);
+        self.collection.disjoint = Arc::default();
     }
 
     pub fn delete(&mut self, selection_id: usize) {