fix(single): match reference article action bar 1:1

The action bar used a locally invented pill-chip style that overrode the
reference theme's 80px icon-over-text columns, and the JS toggled a
class no stylesheet targeted — so likes/favorites showed no selected
state at all.

- restore reference markup: <svg class="icon"> + <text>/<count> and the
  actived class, with data-stat-count/data-base-count preserved
- toggle actived plus a transient action-animation so the lovestar
  keyframes finally reach the DOM
- drop the CSS overrides and now-dead action-btn/.action-btn--reward
  and .post-actions-card rules; main.css already carried the reference
  rules the overrides were shadowing

inc/helpers/aksrt-rewards.php

@@ -24,11 +24,13 @@ if (!function_exists('aksrt_get_rewards_button')) {
 		}
 		$settings = \AKSRT\Settings\Settings::get_post_page_settings();
 		$label = (string) ($settings['rewards_btn_text'] ?? __('赞赏', 'aksrt'));
+		$icon = function_exists('aksrt_icon_markup') ? aksrt_icon_markup('zibsvg-money') : '';
 		return sprintf(
-			'<button type="button" class="%1$s aksrt-reward-open" data-aksrt-reward-open data-user-id="%2$d" data-post-id="%3$d"><i class="fa fas fa-gift em09" aria-hidden="true"></i> <span class="action-btn__label">%4$s</span></button>',
+			'<button type="button" class="%1$s aksrt-reward-open" data-aksrt-reward-open data-user-id="%2$d" data-post-id="%3$d">%4$s<text>%5$s</text></button>',
 			esc_attr($class),
 			$user_id,
 			$post_id,
+			$icon, // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- fixed sprite markup.
 			esc_html($label)
 		);
 	}