feat(core): add optionalModels field in AiPrompt and support the front-end modelId param (#12224)

Close [AI-116](https://linear.app/affine-design/issue/AI-116)

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

- **New Features**
  - Added support for specifying alternative AI models in chat prompts, enabling users to select from multiple available models.
  - Expanded AI model options with new additions: 'gpt-4.1', 'o3', and 'claude-3-5-sonnet-20241022'.

- **Enhancements**
  - Users can now optionally choose a specific AI model during chat interactions.
  - Prompts and chat sessions reflect and support selection of alternative models where applicable.

- **Bug Fixes**
  - Improved handling of prompt configuration defaults for better reliability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

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

@@ -352,12 +352,14 @@ export class CopilotClient {
     messageId,
     reasoning,
     webSearch,
+    modelId,
     signal,
   }: {
     sessionId: string;
     messageId?: string;
     reasoning?: boolean;
     webSearch?: boolean;
+    modelId?: string;
     signal?: AbortSignal;
   }) {
     let url = `/api/copilot/chat/${sessionId}`;
@@ -365,6 +367,7 @@ export class CopilotClient {
       messageId,
       reasoning,
       webSearch,
+      modelId,
     });
     if (queryString) {
       url += `?${queryString}`;
@@ -380,11 +383,13 @@ export class CopilotClient {
       messageId,
       reasoning,
       webSearch,
+      modelId,
     }: {
       sessionId: string;
       messageId?: string;
       reasoning?: boolean;
       webSearch?: boolean;
+      modelId?: string;
     },
     endpoint = 'stream'
   ) {
@@ -393,6 +398,7 @@ export class CopilotClient {
       messageId,
       reasoning,
       webSearch,
+      modelId,
     });
     if (queryString) {
       url += `?${queryString}`;