fix(core): wrap code in ai chat (#10108)

[BS-2540](https://linear.app/affine-design/issue/BS-2540/ai-chat-中-code-block-需要默认换行)

blocksuite/affine/shared/src/adapters/middlewares/code.ts

@@ -0,0 +1,11 @@
+import type { TransformerMiddleware } from '@blocksuite/store';
+
+export const CODE_BLOCK_WRAP_KEY = 'codeBlockWrap';
+
+export const codeBlockWrapMiddleware = (
+  wrap: boolean
+): TransformerMiddleware => {
+  return ({ adapterConfigs }) => {
+    adapterConfigs.set(CODE_BLOCK_WRAP_KEY, String(wrap));
+  };
+};

blocksuite/affine/shared/src/adapters/middlewares/index.ts

@@ -1,2 +1,3 @@
+export * from './code';
 export * from './copy';
 export * from './paste';