Multisite: Replace get_blog_details() with get_site() in network admin screens.

Props iamfriendly.
See #37102.
Fixes #38349.

Built from https://develop.svn.wordpress.org/trunk@38824


git-svn-id: http://core.svn.wordpress.org/trunk@38767 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/network/site-themes.php

@@ -58,7 +58,7 @@ if ( ! $id )
 
 $wp_list_table->prepare_items();
 
-$details = get_blog_details( $id );
+$details = get_site( $id );
 if ( ! $details ) {
 	wp_die( __( 'The requested site does not exist.' ) );
 }