Undo deletes all currently equipped Jewels

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• I'm running the latest version of Path of Building and I've verified this by checking the changelog

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• I've checked for duplicate issues by using the search function of the issue tracker

What is the expected behaviour/value?

Using the undo feature (CTRL+Z) should not wipe the equipped jewel list

What is the actual behaviour/value?

When there is only one change in the undo stack and CTRL+Z is used, all Jewels are deleted from the current build.

It seems to affect all Jewel types (Cluster, Abyssal, Crimson/Veridian etc.)

How to reproduce the issue

1. Load up a saved build with at least 1 socketed Jewel
2. Make a single change. e.g. set any single equipment slot to None or equip an item.
3. Undo (CTRL+Z) the change
4. All Jewel sockets become unequipped

Build code

https://pastebin.com/n964bZ4w

Screenshots

No response

加载提供的 build code，并确保至少镶嵌了一个 Jewel，进行一次装备变更，然后使用 CTRL+Z 重现问题。跟踪撤销路径和已装备 Jewel 的状态，检查撤销是否恢复之前的装备，同时不会卸下 Cluster、Abyssal 或 Crimson/Veridian Jewels。完成标准是：列出的重现步骤不再删除任何已装备的 Jewel。