fix: 修复 Antd 和 React 废弃 API 警告

- AutoComplete/Select: dropdownStyle -> styles.popup.root
- AutoComplete/Select: popupClassName -> classNames.popup.root
- 移除 WebkitBackdropFilter（Chakra backdropFilter 自动处理）
- Table rowKey: 使用唯一标识符替代 index 参数

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/views/Company/components/CompanyOverview/components/shareholder/ShareholdersTable.tsx

@@ -215,7 +215,7 @@ const ShareholdersTable: React.FC<ShareholdersTableProps> = ({
         <Table
           columns={columns}
           dataSource={shareholders.slice(0, 10)}
-          rowKey={(record: Shareholder, index?: number) => `${record.shareholder_name}-${index}`}
+          rowKey={(record: Shareholder) => `${record.shareholder_name}-${record.shareholder_rank ?? ''}-${record.end_date ?? ''}`}
           pagination={false}
           size={isMobile ? "small" : "middle"}
           scroll={{ x: isMobile ? 400 : undefined }}