fix: revert the raw method in post for searching.

src/helpers/schema.ts

@@ -1,6 +1,6 @@
 import { defaultCover } from '@/content/config.ts';
 import options from '@/options';
-import { getCollection, type Render } from 'astro:content';
+import { getCollection, getEntry, type Render } from 'astro:content';
 
 // Import the collections from the astro content.
 const categoriesCollection = await getCollection('categories');
@@ -24,6 +24,7 @@ export type Post = (typeof postsCollection)[number]['data'] & {
   slug: string;
   permalink: string;
   render: () => Render['.mdx'];
+  raw: () => Promise<string>;
 };
 export type Tag = (typeof tagsCollection)[number]['data'][number] & { counts: number; permalink: string };
 
@@ -44,6 +45,10 @@ export const posts: Post[] = postsCollection
     slug: post.slug,
     permalink: `/posts/${post.slug}`,
     render: post.render,
+    raw: async () => {
+      const entry = await getEntry('posts', post.slug);
+      return entry.body;
+    },
     ...post.data,
   }))
   .sort((left: Post, right: Post) => {