test(core): chat with collection & tags (#11388)

### TL:DR

* AI chat with collection E2E
* AI chat with tag E2E

> Close BS-3007

packages/frontend/core/src/blocksuite/ai/chat-panel/index.ts

@@ -607,7 +607,13 @@ export class ChatPanel extends SignalWatcher(
 
     return html`<div class="chat-panel-container" style=${style}>
       <div class="chat-panel-title">
-        <div>${isEmbedding ? `Embedding ${done}/${total}` : 'AFFiNE AI'}</div>
+        <div>
+          ${isEmbedding
+            ? html`<span data-testid="chat-panel-embedding-progress"
+                >Embedding ${done}/${total}</span
+              >`
+            : 'AFFiNE AI'}
+        </div>
         <div
           @click=${() => {
             AIProvider.toggleGeneralAIOnboarding?.(true);

packages/frontend/core/src/blocksuite/ai/components/ai-chat-chips/add-popover.ts

@@ -254,6 +254,9 @@ export class ChatPanelAddPopover extends SignalWatcher(
   @property({ attribute: false })
   accessor abortController!: AbortController;
 
+  @property({ attribute: 'data-testid', reflect: true })
+  accessor testId: string = 'ai-search-input';
+
   @query('.search-input')
   accessor searchInput!: HTMLInputElement;