Multi-line selection replaced by the key-name (e.g. "PageDown")

[hsyl20]

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• [x] I have read CONTRIBUTING.md
• [x] I have searched the existing issues and didn't find any that were similar
• [x] I have considered creating a pull request with fixes instead of a bug report and want to proceed

Current Behavior

Select several lines of text. Then press "page-down" while maintaining "shift" pressed to select more. Instead of selecting more, the current selection is replaced with "PageDown" (literally).

https://github.com/user-attachments/assets/06e1ba67-b39c-456f-a6e9-45b2691d5e2d

This also fails similarly with at least the following keys: Home, End, PageUp. Arrows work though.

Expected Behavior

Don't replace any text, just select it.

Steps To Reproduce

In the Linux app:

1. write some text lines
2. select some of them
3. press "shift + page-down" (or replace "'page-down" with "page-up", "home", or "end")
4. see that your selection has been replaced with "PageDown" (or the other key names respectively)

Environment

- OS: ArchLinux
- Version: 0.46.2

Anything else?

No response