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/layouts/Layout.astro

@@ -4,7 +4,7 @@ import { PUBLIC_GOOGLE_SITE_VERIFICATION } from "astro:env/client";
 import { SITE } from "@/config";
 import "@/styles/global.css";
 
-export interface Props {
+type Props = {
   title?: string;
   author?: string;
   profile?: string;
@@ -14,7 +14,7 @@ export interface Props {
   pubDatetime?: Date;
   modDatetime?: Date | null;
   scrollSmooth?: boolean;
-}
+};
 
 const {
   title = SITE.title,