feat(widgets): number paginate for hot/paid/forum lists

Extend aksrt_get_ajax_number_paginate to HotPosts, PaidPosts, forum
hot/topic lists and product tabs; REST accepts number + paid filters.

src/AKSRT/Widgets/WidgetProductTab.php

@@ -167,7 +167,7 @@ class WidgetProductTab extends \WP_Widget {
 			'tabs'     => sanitize_textarea_field((string) ($new_instance['tabs'] ?? '')),
 			'per_page' => max(1, min(20, (int) ($new_instance['per_page'] ?? 8))),
 			'style'    => sanitize_key((string) ($new_instance['style'] ?? 'default')),
-			'paginate' => sanitize_key((string) ($new_instance['paginate'] ?? 'ajax')),
+			'paginate' => in_array(sanitize_key((string) ($new_instance['paginate'] ?? 'ajax')), ['none', 'ajax', 'number'], true) ? sanitize_key((string) ($new_instance['paginate'] ?? 'ajax')) : 'ajax',
 		];
 	}
 }