fix: define component Props type instead of typecasting Astro.props

This surfaces some type errors in props being passed to some components,
particularly in the way Features passes the classes props.

src/components/ui/WidgetWrapper.astro

@@ -1,7 +1,14 @@
 ---
+import type { HTMLTag } from "astro/types";
+import type { Widget } from "~/types";
 import { twMerge } from "tailwind-merge";
 import Background from "./Background.astro";
 
+export interface Props extends Widget {
+  containerClass?: string;
+  ["as"]?: HTMLTag;
+}
+
 const { id, isDark = false, containerClass = "", bg, as = "section" } = Astro.props;
 
 const WrapperTag = as;