feat(frontend): replace lazy loading with zibll lazysizes

templates/pages/page-messages.php

@@ -237,7 +237,7 @@ if (!$messages_base) {
 									<div class="aksrt-pm__item<?php echo !empty($conv['unread']) ? ' is-unread' : ''; ?>"
 										 data-conv-id="<?php echo esc_attr((string) ($conv['id'] ?? '')); ?>"
 										 data-other-id="<?php echo esc_attr((string) ($conv['other_user_id'] ?? '')); ?>">
-										<img class="aksrt-pm__avatar" src="<?php echo esc_url((string) ($conv['other_avatar'] ?? '')); ?>" alt=""<?php echo function_exists('aksrt_lazy_loading') ? aksrt_lazy_loading('avatar') : ' loading="lazy"'; ?> />
+										<img<?php echo aksrt_get_lazy_attr('lazy_private', (string) ($conv['other_avatar'] ?? ''), 'aksrt-pm__avatar', aksrt_get_lazy_thumb('sm')); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?> alt="">
 										<div class="aksrt-pm__info">
 											<div class="aksrt-pm__name">
 												<?php echo esc_html((string) ($conv['other_name'] ?? '')); ?>