Fix Recent Documents List (continues #8952) (#9919)

@SomeoneToIgnore This code should 100% work for future Zed users, but
for current Zed users, Zed's internal list of recents may not be synced
w/ macOS' Recent Documents at first. If needed this can be fixed by
calling `cx.refresh_recent_documents` on startup, but that feels a bit
unnecessary.

Release Notes:

- Fixes behavior of Recent Documents list on macOS

crates/gpui/src/app.rs

@@ -1129,17 +1129,14 @@ impl AppContext {
         self.platform.set_menus(menus, &self.keymap.borrow());
     }
 
-    /// Adds given path to list of recent paths for the application.
+    /// Adds given path to the bottom of the list of recent paths for the application.
     /// The list is usually shown on the application icon's context menu in the dock,
     /// and allows to open the recent files via that context menu.
-    pub fn add_recent_documents(&mut self, paths: &[PathBuf]) {
-        self.platform.add_recent_documents(paths);
+    /// If the path is already in the list, it will be moved to the bottom of the list.
+    pub fn add_recent_document(&mut self, path: &Path) {
+        self.platform.add_recent_document(path);
     }
 
-    /// Clears the list of recent paths from the application.
-    pub fn clear_recent_documents(&mut self) {
-        self.platform.clear_recent_documents();
-    }
     /// Dispatch an action to the currently active window or global action handler
     /// See [action::Action] for more information on how actions work
     pub fn dispatch_action(&mut self, action: &dyn Action) {