⚡ Bolt: [performance improvement] Cache Iconify lookups

[sshahriazz]

💡 What: The IconifyIcon component was iterating through an array of icon sets to look up icon data on every render. This PR introduces a Map cache to store the resolved icon data (or null for missing icons).
🎯 Why: The previous approach required O(N) iterations on each render for each icon. Since a page can have many icons, this was a performance bottleneck.
📊 Impact: Reduces lookup complexity from O(N) to O(1) by saving CPU cycles when resolving and reusing already-looked-up icons. Faster rendering on heavy pages.
🔬 Measurement: Verify by navigating through the app and rendering components loaded with multiple IconifyIcon elements. Rendering times for those pages should improve. Build times should continue to remain stable since this operates at runtime.

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PR created automatically by Jules for task 12079222641153476895 started by @sshahriazz

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