Archive title block bindings

block-bindings.php

/**
 * Register block binding sources.
 */
if ( ! function_exists( 'prefix_register_block_bindings' ) ) :
	/**
	 * Register the archive title binding source.
	 *
	 * @since Project Name 1.0.0
	 * @return void
	 */
	function prefix_register_block_bindings() {
		register_block_bindings_source(
			'prefix/archive-title',
			array(
				'label'              => _x( 'Archive title', 'Label for the archive title placeholder in the editor', 'text-domain' ),
				'get_value_callback' => 'prefix_archive_title_binding',
			)
		);
	}
endif;

/**
 * Register block binding callback function for the archive title.
 */
if ( ! function_exists( 'prefix_archive_title_binding' ) ) :
	/**
	 * Callback function for the archive title block binding source.
	 *
	 * @since Project Name 1.0
	 * @param array    $source_args    Array containing source arguments used to look up the override value.
	 * @param WP_Block $block_instance The block instance.
	 * @return string archive title text.
	 */
	function prefix_archive_title_binding( array $source_args, $block_instance ) {
		$binding_data = null;
		if ( is_archive() ) {
			$binding_data = get_the_archive_title();
		} elseif ( is_search() ) {
			$binding_data = sprintf(
				/* translators: %s is the search term. */
				__( 'Search results for: "%s"', 'text-domain' ),
				get_search_query()
			);
		} elseif ( is_home() ) {
			$binding_data = __( 'Blog', 'text-domain' );
		}
		return apply_filters( 'prefix_archive_title_binding', $binding_data, $source_args, $block_instance );
	}
endif;

add_action( 'init', 'prefix_register_block_bindings' );

pattern-archive-title.php

<?php
/**
 * Title: Archive Title
 * Slug: prefix/archive-title
 * Categories: header
 * Description: Displays the title for archive pages, including search, blog, and other archive pages.
 *
 * @package    Project_Name
 * @subpackage Project_Name/patterns
 * @since      1.0.0
 */

?>
<!-- wp:heading {"metadata":{"bindings":{"content":{"source":"prefix/archive-title"}}},"level":1} -->
	<h1 class="wp-block-heading"></h1>
<!-- /wp:heading -->