fix: add new Ukrainian translation line for STR_SCREENSHOT_BUTTON (#1149)

## Summary

* **What is the goal of this PR?**
Add missing `STR_SCREENSHOT_BUTTON`

## Additional Context

After the screenshot feature was added, a new translation line was
introduced

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**NO **_