Return 404 for 404 page

crates/lib/page/src/servable/page.rs

@@ -87,6 +87,8 @@ pub struct Page {
 				&'a RequestContext,
 			) -> Pin<Box<dyn Future<Output = Markup> + 'a + Send + Sync>>,
 	>,
+
+	pub response_code: StatusCode,
 }
 
 impl Default for Page {
@@ -96,6 +98,7 @@ impl Default for Page {
 			html_ttl: Some(TimeDelta::days(1)),
 			generate_html: Box::new(|_, _| Box::pin(async { html!() })),
 			immutable: true,
+			response_code: StatusCode::OK,
 		}
 	}
 }
@@ -115,7 +118,7 @@ impl Servable for Page {
 			let html = self.generate_html(ctx).await;
 
 			return Rendered {
-				code: StatusCode::OK,
+				code: self.response_code,
 				body: RenderedBody::Markup(html),
 				ttl: self.html_ttl,
 				immutable: self.immutable,