feat(core): remove chat-panel component's dependency on doc (#12975)

Close [AI-259](https://linear.app/affine-design/issue/AI-259)
Close [AI-243](https://linear.app/affine-design/issue/AI-243)

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

* **New Features**
* Introduced a unified AI chat content component to manage and display
chat interactions.
* Added new chat block message components for improved chat message
rendering.

* **Refactor**
* Simplified and unified session management across all AI chat
components, now passing full session objects instead of session IDs.
* Updated component and property names for clarity and consistency
(e.g., chat message and block message components).
* Consolidated chat history and actions retrieval for a more streamlined
chat experience.
* Removed redundant session ID getters and replaced them with direct
session object usage.
* Streamlined chat panel and composer components by removing internal
message and context state management.

* **Bug Fixes**
* Improved handling of chat session state and loading, reducing
redundant state properties.
* Enhanced event handling to prevent errors when chat parameters are
missing.

* **Tests**
* Removed outdated chat clearing test cases to align with new chat state
management.

* **Chores**
* Updated import paths and reorganized module exports for better
maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/desktop/pages/workspace/detail-page/detail-page.tsx

@@ -1,6 +1,6 @@
 import { Scrollable } from '@affine/component';
 import { PageDetailLoading } from '@affine/component/page-detail-skeleton';
-import type { ChatPanel } from '@affine/core/blocksuite/ai';
+import type { AIChatParams, ChatPanel } from '@affine/core/blocksuite/ai';
 import { AIProvider } from '@affine/core/blocksuite/ai';
 import type { AffineEditorContainer } from '@affine/core/blocksuite/block-suite-editor';
 import { EditorOutlineViewer } from '@affine/core/blocksuite/outline-viewer';
@@ -119,7 +119,10 @@ const DetailPageImpl = memo(function DetailPageImpl() {
 
   useEffect(() => {
     const disposables: Subscription[] = [];
-    const openHandler = () => {
+    const openHandler = (params: AIChatParams | null) => {
+      if (!params) {
+        return;
+      }
       workbench.openSidebar();
       view.activeSidebarTab('chat');
     };