Local-axis grab (G key) dashed line should show only the X or Y component, tilted

G lets you enable grab and then hit X or Y once for a global axis (document space) and a second time for a local axis (layer space), but the dashed line visualization is drawn incorrectly in the latter case:

https://github.com/user-attachments/assets/1e049146-e215-4abb-9f81-27f62e398836

When transforming in local space, it should tilt the dashed line with the local space as well, and draw just the X or Y component instead of both.

See [this comment](https://github.com/GraphiteEditor/Graphite/pull/3527#issuecomment-3910935758) for a little more detail.

在编辑器中重现 G、然后 X 或 Y、然后 X 或 Y 的序列，并比较全局轴和局部轴的行为。跟踪 grab 和虚线可视化的入口点，并使用链接的 pull request 评论作为上下文；完成标准是局部线条随图层空间倾斜，并且只显示选定的 X 或 Y 分量。

由索引模型根据 Issue 内容生成。