add window_event_listener

[Lendemor]

fix #1314

[greptile-apps]

PR Summary

Added a new WindowEventListener component to handle window-level events with proper lifecycle management and TypeScript support.

• Implemented window event handlers for resize, scroll, focus, blur, visibility_change, before_unload, and keydown events in reflex/components/core/window_events.py
• Integrated proper event cleanup using React's useEffect to prevent memory leaks
• Component extends Fragment and excludes event handler props from prop drilling
• Added component exports via rx.window_event_listener in main module

_{4 files reviewed, 1 comment
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[codspeed-hq]

CodSpeed Performance Report

Merging #5568 will not alter performance

_{Comparing lendemor/window-event-listener (4f1a242) with main (69d6eb5)}

Summary

✅ 8 untouched benchmarks

[masenf]

code looks good. can we try to get @devin-ai-integration to write an AppHarness test to make sure all the features keep working

[masenf]

lets merge it and do the app harness test in another PR as a separate devin task