feat(style): add text-transform variable

[silvester-pari]

Implemented changes

This PR introduces a new CSS variable called text-transform. With this, the default text-transform of filter property titles, filter properties and results can be overridden (default is capitalize).

Screenshots/Videos

Default (capitalize)

--text-transform: none

--text-transform: uppercase

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [ ] For new features: I have created a story showcasing this new feature
• [x] All checks have passed
• [x] The PR title follows conventional commit style and reflects the type of change (major/minor/patch, breaking)
• [x] The PR title describes the change within this element (each merged PR equals one entry in the element's changelog!)

[netlify[bot]]

✅ Deploy Preview for eoxelements ready!

Name	Link
🔨 Latest commit	56dcd8a7bec7bb71a9440be3f659c5c967c24779
🔍 Latest deploy log	https://app.netlify.com/sites/eoxelements/deploys/66f57c61c9ff5d0008da41b3
😎 Deploy Preview	https://deploy-preview-1285--eoxelements.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.