feat(home): 首页图标区分实心选中态

test/home/app_bottom_nav_test.dart

@@ -181,8 +181,8 @@ void main() {
   });
 
   testWidgets('should_fallback_when_asset_icon_is_missing', (tester) async {
-    await tester.pumpWidget(
-      MaterialApp(
+    Widget navigation({required bool selected}) {
+      return MaterialApp(
         home: Scaffold(
           bottomNavigationBar: AppBottomNav(
             items: [
@@ -191,17 +191,23 @@ void main() {
                 icon: Icons.theaters_outlined,
                 selectedIcon: Icons.theaters,
                 assetPath: 'assets/icon/missing_film_reel.png',
+                selectedAssetPath: 'assets/icon/missing_film_reel_filled.png',
                 label: 'Home',
-                selected: true,
+                selected: selected,
                 onTap: () {},
               ),
             ],
           ),
         ),
-      ),
-    );
-    await tester.pumpAndSettle();
+      );
+    }
 
+    await tester.pumpWidget(navigation(selected: true));
+    await tester.pumpAndSettle();
+    expect(find.byIcon(Icons.theaters), findsOneWidget);
+
+    await tester.pumpWidget(navigation(selected: false));
+    await tester.pumpAndSettle();
     expect(find.byIcon(Icons.theaters_outlined), findsOneWidget);
   });
 }

test/home/home_nav_ui_test.dart

@@ -235,7 +235,7 @@ void main() {
     );
     expect(
       (selectedHomeImage.image as AssetImage).assetName,
-      'assets/icon/film_reel.png',
+      'assets/icon/film_reel_filled.png',
     );
     expect(
       Size(selectedHomeImage.width!, selectedHomeImage.height!),
@@ -300,6 +300,16 @@ void main() {
           .colorFilter,
       const ColorFilter.mode(AppColors.navUnselected, BlendMode.srcIn),
     );
+    final unselectedHomeImage = tester.widget<Image>(
+      find.descendant(
+        of: find.byKey(const Key('tab-home')),
+        matching: find.byType(Image),
+      ),
+    );
+    expect(
+      (unselectedHomeImage.image as AssetImage).assetName,
+      'assets/icon/film_reel.png',
+    );
   });
 
   testWidgets('should_map_four_tabs_to_home_recommend_following_and_me', (