Assistant: propagate cancel action if there is no pending inline assist (#2923)

Release Notes:

- Fixed a bug where modals could not be dismissed with `escape` when
certain views were active in the workspace (preview only).

crates/ai/src/assistant.rs

@@ -406,20 +406,11 @@ impl AssistantPanel {
         _: &editor::Cancel,
         cx: &mut ViewContext<Workspace>,
     ) {
-        let panel = if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
+        if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
-            panel
+            if let Some(editor) = workspace
-        } else {
-            return;
-        };
-        let editor = if let Some(editor) = workspace
                 .active_item(cx)
                 .and_then(|item| item.downcast::<Editor>())
             {
-            editor
-        } else {
-            return;
-        };
-
                 let handled = panel.update(cx, |panel, cx| {
                     if let Some(assist_id) = panel
                         .pending_inline_assist_ids_by_editor
@@ -432,11 +423,14 @@ impl AssistantPanel {
                         false
                     }
                 });
-
+                if handled {
-        if !handled {
+                    return;
-            cx.propagate_action();
                 }
             }
+        }
+
+        cx.propagate_action();
+    }
 
     fn close_inline_assist(&mut self, assist_id: usize, undo: bool, cx: &mut ViewContext<Self>) {
         self.hide_inline_assist(assist_id, cx);