fix(wpmc 1.0.1): remove __() from labels (no translations, fixes WP 6.7 notice)

Replace all __('...', 'wp-multi-city') calls in CPT, taxonomy, ACF field group,
and options page label arrays with literal Russian strings. The plugin ships no
.mo translation files, so wrapping labels in __() was YAGNI and triggered the
WP 6.7+ _load_textdomain_just_in_time notice.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

includes/class-taxonomy.php

@@ -16,10 +16,10 @@ final class Taxonomy
     {
         register_taxonomy(self::SLUG, [PostType::SLUG], [
             'labels'             => [
-                'name'          => __('Города', 'wp-multi-city'),
-                'singular_name' => __('Город', 'wp-multi-city'),
-                'menu_name'     => __('Города', 'wp-multi-city'),
-                'add_new_item'  => __('Добавить', 'wp-multi-city'),
+                'name'          => 'Города',
+                'singular_name' => 'Город',
+                'menu_name'     => 'Города',
+                'add_new_item'  => 'Добавить',
             ],
             'public'             => false,
             'publicly_queryable' => false,