[SamsungTizenOS] Desktop browser incorrectly triggers mobile warning when zoomed in (300%+)

[JSUYA]

📋 Summary

Desktop browsers display the mobile-only warning message when the page is zoomed in (300%+), incorrectly treating the environment as mobile.

🛠️ Steps to Reproduce

Open the site in a desktop browser (Chrome/Edge/Safari, etc.) and zoom in to 300% or higher.

🎯 Expected Behavior

The mobile-only warning should appear only when the user agent is mobile.
On desktop user agents, the warning should never appear, regardless of zoom level.

[d-zielonka]

Fix is ready to review, and delployment pending.