Fix AI Assistance panel not updating state after move to top/bottom

When moved, panel is being hidden and shown in new location. Event about other panels being revealed and or hidden as a result of the move are sent in between. Ai Assistance panel is unsubscribed from the events while hidden, so it is needed to force update when it is shown again.

Fixed: 434160934
Change-Id: I3521b5e414e4ef944fdb06af3d219930069c14b0
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6812254
Auto-Submit: Piotr Paulski <piotrpaulski@chromium.org>
Reviewed-by: Ergün Erdoğmuş <ergunsh@chromium.org>
Commit-Queue: Ergün Erdoğmuş <ergunsh@chromium.org>

Author: Piotr Paulski

front_end/panels/ai_assistance/AiAssistancePanel.test.ts

@@ -1253,6 +1253,25 @@ describeWithMockConnection('AI Assistance Panel', () => {
           });
     }
 
+    it('should refresh its state when moved', async () => {
+      updateHostConfig({
+        devToolsFreestyler: {
+          enabled: true,
+        },
+      });
+      viewManagerIsViewVisibleStub.callsFake(viewName => viewName === 'elements');
+      const {panel, view} = await createAiAssistancePanel();
+
+      assert.strictEqual(view.input.conversationType, AiAssistanceModel.ConversationType.STYLING);
+
+      // Simulate ViewManager.moveView() that hides panel, updates locations and other panel visibility, then shows moved view
+      panel.willHide();
+      viewManagerIsViewVisibleStub.callsFake(viewName => viewName === 'console');
+      panel.wasShown();
+
+      assert.isUndefined((await view.nextInput).conversationType);
+    });
+
     describe('Performance Insight agent', () => {
       it('should select the PERFORMANCE_INSIGHT agent when the performance panel is open and insights are enabled and an insight is expanded',
          async () => {

front_end/panels/ai_assistance/AiAssistancePanel.ts

@@ -743,6 +743,7 @@ export class AiAssistancePanel extends UI.Panel.Panel {
     UI.Context.Context.instance().addFlavorChangeListener(
         TimelinePanel.TimelinePanel.TimelinePanel, this.#bindTimelineTraceListener, this);
     this.#bindTimelineTraceListener();
+    this.#selectDefaultAgentIfNeeded();
 
     Host.userMetrics.actionTaken(Host.UserMetrics.Action.AiAssistancePanelOpened);
   }