Improve Table accessibility for sorting and filtering controls

[leno23]

Motivation

• 提升表格头部排序与筛选控件的无障碍可识别性，以便屏幕阅读器正确报告排序状态并为交互控件提供可读名称。
• 减少无标签下拉框与排序按钮带来的可用性盲区并保留原有键盘操作语义。

Description

• 在可排序的 <th> 上添加了 aria-sort，根据当前状态返回 ascending、descending 或 none。
• 为排序的 <button> 增加了动态 aria-label，描述下一步排序动作（例如 按 XXX 升序排序 / 按 XXX 降序排序）。
• 为列筛选的 <select> 增加了 aria-label（例如 筛选 XXX），以避免无标签下拉框的无障碍盲区。
• 在 packages/ui/src/components/data/Table.tsx 中引入了 columnTitleText、ariaSortValue 与 sortActionLabel 局部变量以构建上述可访问性属性，同时保留原生 <button> 的键盘可操作性。

Testing

• 运行 npm run lint:ui 并通过（无额外 ESLint 错误）。
• 运行 npm run typecheck:ui 并通过（tsc --noEmit 无错误）。

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Codex Task

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Derive ARIA labels from text, not generic ReactNode stringification

Converting column.title with String(column.title) can generate unusable labels like "[object Object]" when consumers pass a JSX title (which is allowed by title: ReactNode). In that case both the sort button label and filter select label become meaningless to screen readers, so the accessibility improvement regresses for non-string headers. Please derive an explicit text label field (or only apply these ARIA labels when title is a plain string/number).

Useful? React with 👍 / 👎.