Fixed the preview of wallpaper

[lonerOrz]

Pull Request

Type of change

Please put an x in the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (non-breaking change; modified files are limited to the documentations)
• Technical debt (a code change that does not fix a bug or add a feature but makes something clearer for devs)
• Other (provide details below)

Checklist

Please put an x in the boxes that apply:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My commit message follows the commit guidelines.
• My change requires a change to the documentation.
• I want to add something in Hyprland-Dots wiki.
• I have added tests to cover my changes.
• I have tested my code locally and it works as expected.
• All new and existing tests passed.

Additional context

Fixed the preview of wallpaper