⚡ Bolt: Cache IconifyIcon resolution

[sshahriazz]

💡 What: Implemented a Map cache (iconCache) in IconifyIcon.tsx to memoize the resolution of iconData for both found and unfound icons.
🎯 Why: Previously, the iconData function performed an O(N) array iteration over all imported icon sets for any prefix-less icon on every single render. This caused unnecessary synchronous CPU blocking and layout jank, especially when rendering lists or complex UIs with multiple icons in React 19 / MUI.
📊 Impact: Reduces O(N) array iterations to an O(1) Map lookup on subsequent renders of any icon, significantly reducing component render time.
🔬 Measurement: Verify by rendering a view with multiple instances of prefix-less icons and observe reduced React render timings in the profiler. Unfound icons now fail fast by caching the negative null result, preventing repeated iteration loops on missing icons.

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PR created automatically by Jules for task 6290027225951372913 started by @sshahriazz

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