feat(mining-app): connect my team page from profile

Link the "我的团队" menu item in profile page to the team tree page,
completing the integration of the team tree feature.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-app/lib/presentation/pages/profile/profile_page.dart

@@ -472,7 +472,7 @@ class ProfilePage extends ConsumerWidget {
           _buildSettingItem(
             icon: Icons.people,
             label: '我的团队',
-            onTap: () {},
+            onTap: () => context.push(Routes.myTeam),
             showDivider: false,
           ),
         ],