fix: 修复 BalanceCard 参数错误

- 移除 asset_page.dart 中 BalanceCard 的 provider 参数
- 与合并后的 BalanceCard 接口保持一致

flutter_monisuo/lib/ui/pages/asset/asset_page.dart

@@ -88,7 +88,6 @@ class _AssetPageState extends State<AssetPage> with AutomaticKeepAliveClientMixi
                     children: [
                       Expanded(
                         child: BalanceCard(
-                          provider: provider,
                           label: '资金账户',
                           balance: provider.fundAccount?.balance ?? provider.overview?.fundBalance ?? '0.00',
                         ),
@@ -96,7 +95,6 @@ class _AssetPageState extends State<AssetPage> with AutomaticKeepAliveClientMixi
                       const SizedBox(width: AppSpacing.sm),
                       Expanded(
                         child: BalanceCard(
-                          provider: provider,
                           label: '交易账户',
                           balance: _calculateTradeTotal(provider),
                         ),