refactor: update component props and improve types (#600)

- stop exporting component Props
- replace interface with type for component Props
- enhance dynamic rendering in several components

src/pages/posts/[...slug]/index.astro

@@ -4,9 +4,9 @@ import PostDetails from "@/layouts/PostDetails.astro";
 import getSortedPosts from "@/utils/getSortedPosts";
 import { getPath } from "@/utils/getPath";
 
-export interface Props {
+type Props = {
   post: CollectionEntry<"blog">;
-}
+};
 
 export async function getStaticPaths() {
   const posts = await getCollection("blog", ({ data }) => !data.draft);