fix: empty lens select

[lneugebauer]

Description

The settings screen has the option to add lens shortcuts but does not populate the select.
This pull request adds back the lensfun db call that has been removed in fc0ca85.
Closes #1245.

Type of Change

• Bug fix
• New feature
• Breaking change
• Performance improvement
• Code refactoring
• Documentation update
• UI/UX improvement
• Build/CI or Dependency update

Changes Made

• Add useEffect hook to get lensfun data.

Screenshots/Videos

Testing

• I have tested these changes locally and confirmed that they work as expected without issues

Test Configuration:

• OS: macOS Tahoe
• Hardware: Apple M1 Max

Checklist

• My code follows the project's code style
• I haven't added unnecessary AI-generated code comments
• My changes generate no new warnings or errors

Additional Notes

AI Disclaimer:

Please state the involvement of AI in this PR:

• This PR is entirely AI-generated
• This PR is AI-generated but guided by a human
• This PR was handwritten with AI assistance (spell check, logic suggestions, error resolving)
• This PR contains only blood, sweat, and coffee (AI-free)

[CyberTimon]

Thanks a lot for the fix! I haven't noticed this when I refactored....