fix(ad): 화면별 네이티브 광고 높이 조정

lib/presentation/pages/restaurant_list/restaurant_list_screen.dart

@@ -167,7 +167,7 @@ class _RestaurantListScreenState extends ConsumerState<RestaurantListScreen> {
                           horizontal: 16,
                           vertical: 8,
                         ),
-                        height: 200, // 카드 높이와 비슷한 중간 사이즈
+                        height: 100, // 작은 템플릿으로 노출
                       );
                     }
 

lib/presentation/pages/share/share_screen.dart

@@ -162,7 +162,7 @@ class _ShareScreenState extends ConsumerState<ShareScreen> {
                 ),
                 const SizedBox(height: 16),
                 NativeAdPlaceholder(
-                  height: 220,
+                  height: 360,
                   enabled: !screenshotModeEnabled,
                 ),
                 const SizedBox(height: 16),

lib/presentation/widgets/native_ad_placeholder.dart

@@ -239,7 +239,7 @@ class _NativeAdPlaceholderState extends State<NativeAdPlaceholder> {
 
   double _templateMinHeight(TemplateType type) {
     if (type == TemplateType.small) {
-      return 120;
+      return 100;
     }
     return switch (defaultTargetPlatform) {
       TargetPlatform.iOS => 402.0,