fix: clear sessionStorage CRUD search state on approval menu switch

[Copilot]

When switching between approval sidebar menus (e.g., "待审核" → "草稿"), CRUD search conditions stored in sessionStorage leak across lists. If a user searches by instance_name in "待审核" then navigates to "草稿" (which lacks that field), the carried-over filter returns empty results.

• Clear {pathname}/crud and {pathname}/crud/query sessionStorage keys at the top of handleSelect, before any navigation logic runs

const handleSelect: TreeProps['onSelect'] = (keys, info) => {
    const selectedKey = keys[0] as string;
    if (!selectedKey) return;

    try {
      const pathname = window.location.pathname;
      sessionStorage.removeItem(pathname + '/crud');
      sessionStorage.removeItem(pathname + '/crud/query');
    } catch {
      // sessionStorage unavailable
    }
    // ... rest of navigation logic

These are the same keys written by the table API's requestAdaptor in table.js to persist pagination, filters, and sort state across requests within a single list view.

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