Remove search from 404 page

The Make home site doesn't support search, unless it's a search originating from a handbook, see https://github.com/WordPress/wporg-make/blob/68086fcaf1ed927f19886337e88ba9d6362bd01c/source/wp-content/themes/wporg-make-2024/functions.php#L224

Fixes WordPress/wordpress.org#446

source/wp-content/themes/wporg-make-2024/patterns/404.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Title: 404
+ * Slug: wporg-make-2024/404
+ * Inserter: no
+ */
+
+?>
+
+<!-- wp:group {"style":{"border":{"top":{"width":"1px","color":"var:preset|color|charcoal-1"},"right":{"width":"0px","style":"none"},"bottom":{"width":"0px","style":"none"},"left":{"width":"0px","style":"none"}},"spacing":{"padding":{"left":"var:preset|spacing|60","right":"var:preset|spacing|60"},"margin":{"top":"0"}}},"backgroundColor":"charcoal-2","textColor":"white","className":"site-content-container"} -->
+<main class="wp-block-group site-content-container has-white-color has-charcoal-2-background-color has-text-color has-background" style="border-top-color:var(--wp--preset--color--charcoal-1);border-top-width:1px;border-right-style:none;border-right-width:0px;border-bottom-style:none;border-bottom-width:0px;border-left-style:none;border-left-width:0px;margin-top:0;padding-right:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--60)"><!-- wp:group {"textColor":"charcoal-1","className":"wporg-parent-oops-container","layout":{"type":"constrained"}} -->
+<div class="wp-block-group wporg-parent-oops-container has-charcoal-1-color has-text-color"><!-- wp:paragraph {"textColor":"white"} -->
+<p class="has-white-color has-text-color">Change the text color of the group here to adjust "Oops" color.</p>
+<!-- /wp:paragraph --></div>
+<!-- /wp:group -->
+
+<!-- wp:heading {"level":1} -->
+<h1><?php esc_html_e( 'This page doesn&#146;t exist.', 'make-wporg' ); ?></h1>
+<!-- /wp:heading -->
+
+<!-- wp:paragraph -->
+<p>
+	<?php
+	printf(
+		/* translators: %s is the site URL. */
+		wp_kses_post( __( 'Go to <a href="%s">the homepage</a>.', 'make-wporg' ) ),
+		esc_url( get_site_url( null, '/' ) )
+	);
+	?>
+</p>
+<!-- /wp:paragraph -->
+
+</main>
+<!-- /wp:group -->

source/wp-content/themes/wporg-make-2024/templates/404.html

@@ -0,0 +1,3 @@
+<!-- wp:wporg/global-header /-->
+<!-- wp:pattern {"slug":"wporg-make-2024/404"} /-->
+<!-- wp:wporg/global-footer {"style":"white-on-black"} /-->