Networks and Sites: Improve cache key generation in `WP_Network_Query` class.

Improve cache key generation in the `WP_Network_Query` class by removing `update_network_cache` element in the array used to generate the cache key.  This 
element does not affect that cache and by removing it, it improves the likelihood of reusing an existing cache. 

Props Spacedmonkey, furi3r, johnbillion, johnjamesjacoby, flixos90.
Fixes #55461.


Built from https://develop.svn.wordpress.org/trunk@53098


git-svn-id: http://core.svn.wordpress.org/trunk@52687 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-network-query.php

@@ -242,8 +242,8 @@ class WP_Network_Query {
 		// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
 		$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
 
-		// Ignore the $fields argument as the queried result will be the same regardless.
-		unset( $_args['fields'] );
+		// Ignore the $fields, $update_network_cache arguments as the queried result will be the same regardless.
+		unset( $_args['fields'], $_args['update_network_cache'] );
 
 		$key          = md5( serialize( $_args ) );
 		$last_changed = wp_cache_get_last_changed( 'networks' );

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-alpha-53097';
+$wp_version = '6.0-alpha-53098';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.