Docs: Add specific types to WP_Network_Query properties.

Replace the generic `array` type in the docblocks for the `$sql_clauses`, `$query_vars`, `$query_var_defaults`, and `$networks` properties with specific types, including an array shape for `$sql_clauses` and `WP_Network[]|int[]` for `$networks`. Additionally, document the `$found_networks` and `$max_num_pages` counts as `non-negative-int`.

Developed in WordPress#11663.
Follow-up to r37894.

Props baikaresandeep007-1, westonruter.
See #64896.
Fixes #65118.


git-svn-id: https://develop.svn.wordpress.org/trunk@62721 602fd350-edb4-49c9-b593-d223f7449a82

Author: westonruter

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

@@ -29,7 +29,14 @@ class WP_Network_Query {
 	 * SQL query clauses.
 	 *
 	 * @since 4.6.0
-	 * @var array
+	 * @var array{
+	 *     select: string,
+	 *     from: string,
+	 *     where: array<string, string>,
+	 *     groupby: string,
+	 *     orderby: string,
+	 *     limits: string
+	 * }
 	 */
 	protected $sql_clauses = array(
 		'select'  => '',
@@ -44,23 +51,23 @@ class WP_Network_Query {
 	 * Query vars set by the user.
 	 *
 	 * @since 4.6.0
-	 * @var array
+	 * @var array<string, mixed>
 	 */
 	public $query_vars;
 
 	/**
 	 * Default values for query vars.
 	 *
 	 * @since 4.6.0
-	 * @var array
+	 * @var array<string, mixed>
 	 */
 	public $query_var_defaults;
 
 	/**
 	 * List of networks located by the query.
 	 *
 	 * @since 4.6.0
-	 * @var array
+	 * @var WP_Network[]|int[]
 	 */
 	public $networks;
 
@@ -69,6 +76,7 @@ class WP_Network_Query {
 	 *
 	 * @since 4.6.0
 	 * @var int
+	 * @phpstan-var non-negative-int
 	 */
 	public $found_networks = 0;
 
@@ -77,6 +85,7 @@ class WP_Network_Query {
 	 *
 	 * @since 4.6.0
 	 * @var int
+	 * @phpstan-var non-negative-int
 	 */
 	public $max_num_pages = 0;