[Fix] Add permission check to SF Search in cheat mode

[JustAHuman-xD]

Description

In the unlikely event someone manages to get a cheat sheet they can cheat in items with the search feature, we don’t want that.

Proposed changes

Change the logic for search items to match the logic for normal items when clicked. (Have a permission check for cheating, cheat in stack when shifting)

Related Issues (if applicable)

Checklist

• I have fully tested the proposed changes and promise that they will not break everything into chaos.
• I have also tested the proposed changes in combination with various popular addons and can confirm my changes do not break them.
• I have made sure that the proposed changes do not break compatibility across the supported Minecraft versions (1.16.* - 1.20.*).
• I followed the existing code standards and didn't mess up the formatting.
• I did my best to add documentation to any public classes or methods I added.
• I have added Nonnull and Nullable annotations to my methods to indicate their behaviour for null values
• I added sufficient Unit Tests to cover my code.

[github-actions]

Your Pull Request was automatically labelled as: "✨ Fix"
Thank you for contributing to this project! ❤️

[sonarcloud]

Quality Gate passed

Issues
5 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Slimefun preview build

A Slimefun preview build is available for testing!
Commit: 1521755

https://preview-builds.walshy.dev/download/Slimefun/4266/15217555

Note: This is not a supported build and is only here for the purposes of testing.
Do not run this on a live server and do not report bugs anywhere but this PR!