feat(core): restore pinned chat for independent chat (#13154)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Improved chat session management by automatically restoring a pinned
chat session when opening the workspace chat.

* **Enhancements**
* Added support for cancelling certain requests, improving
responsiveness and user experience.

* **Style**
* Updated the label "AFFiNE Intelligence" to "Intelligence" in relevant
UI components for a more concise display.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/blocksuite/ai/provider/copilot-client.ts

@@ -165,7 +165,8 @@ export class CopilotClient {
     docId?: string,
     options?: RequestOptions<
       typeof getCopilotSessionsQuery
-    >['variables']['options']
+    >['variables']['options'],
+    signal?: AbortSignal
   ) {
     try {
       const res = await this.gql({
@@ -176,6 +177,7 @@ export class CopilotClient {
           docId,
           options,
         },
+        signal,
       });
       return res.currentUser?.copilot?.chats.edges.map(e => e.node);
     } catch (err) {