refactor(copy-rule): extract context and improve batch clone modal

- Extract MultiCopyPopupContext to standalone context.ts file
- Add Task type and improve type safety in BatchCloneModal
- Use useRef/useCallback to stabilize batch clone handlers
- Add cleanup effect for selectRules in RuleCheckCard on unmount

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pages/rules/components/CopyRule/comp/Step1.tsx

@@ -3,7 +3,7 @@ import { ProFormDependency, ProFormSelect } from '@ant-design/pro-components';
 import { Divider, Flex, Tag, Typography } from 'antd';
 import { useContext, useEffect, useMemo } from 'react';
 import { $t } from '@/utils/i18n';
-import { MultiCopyPopupContext } from '../Multi‌CopyPopup';
+import { MultiCopyPopupContext } from '../context';
 import RuleCheckCard from './RuleCheckCard';
 
 type Step1Props = {