期望在放大图表之后，支持拖动图表功能

### 问题描述

期望在使用brushFilter放大图表后，支持alt+拖动来拖动图表，查看图表的其他区域

### 重现链接

_No response_

### 重现步骤

_No response_

### 预期行为

_No response_

### 平台

- 操作系统: [macOS, Windows, Linux, React Native ...]
- 网页浏览器: [Google Chrome, Safari, Firefox]

### 屏幕截图或视频（可选）

_No response_

### 补充说明（可选）

_No response_

Locate the chart interaction and brushFilter entry points in the TypeScript source, then read how zoomed chart regions currently handle pointer and keyboard input. Reproduce a zoomed chart and verify that Alt-drag reveals other regions without breaking existing brush behavior; the issue provides no named test or file.

Written by the indexing model from the issue text.