Fix: Resolve CI PHPCS and PHPUnit errors (attempt 2)

- Correct docblock spacing in Admin class for PHPCS.
- Remove explicit wp_create_nonce mock in AdminTest.
- Rely on wp_localize_script Mockery::on() validation for nonce.

tests/test-admin.php

@@ -109,15 +109,6 @@ class AdminTest extends \WP_Mock\Tools\TestCase {
                 'return' => $expected_data['ajax_url'],
             ]
         );
-        // Mock wp_create_nonce() before wp_localize_script uses it
-        \WP_Mock::userFunction(
-            'wp_create_nonce',
-            [
-                'times'  => 1,
-                'args'   => [ 'wpst_admin_nonce' ], // Match the action string used in class-admin.php
-                'return' => $expected_data['nonce'],
-            ]
-        );
         \WP_Mock::userFunction(
             'wp_localize_script',
             [