fix PHP8 error and add wp_block post_type

Hello Andrew.

Thanks for “Admin Search”, it’s very nice plugin.

I make some little changes:

• fix PHP8 error (Fatal error: Uncaught Error: Unsupported operand types: string * int in /bitnami/wordpress/wp-content/plugins/admin-search/ajax.php on line 548)
• add wp_block post_type

Can you include these changes?

fix PHP8 error:

Index: trunk/ajax.php
===================================================================
--- trunk/ajax.php      (revision 3006683)
+++ trunk/ajax.php      (working copy)
@@ -545,7 +545,7 @@
                        'taxonomy'              =>      $taxonomy,
                        'hide_empty'    =>      false,
                        'number'                =>      admin_search_setting( 'result_count' ),
-                       'offset'                =>      ( $paged - 1 ) * admin_search_setting( 'result_count' )
+                       'offset'                =>      (int) ( $paged - 1 ) * (int) admin_search_setting( 'result_count' )
                );

                // If q is an ID, only look for the term with that ID, otherwise, pass q to the name__like argument

add wp_block post_type:

Index: trunk/settings.php
===================================================================
--- trunk/settings.php  (revision 3006683)
+++ trunk/settings.php  (working copy)
@@ -556,7 +556,7 @@
        echo "<div id='admin_search_plugin_setting_post_types'>";

        foreach ( get_post_types( array(), 'object' ) as $post_type ) {
-               if ( $post_type -> {'public'} ) {
+               if ( $post_type -> {'public'} || $post_type -> name === 'wp_block' ) {
                        echo "<p><label><input type='checkbox' name='admin_search_settings[post_types][]' value='{$post_type -> name}'";

                        if ( in_array( $post_type -> name, admin_search_setting( 'post_types', array() ) ) ) {