⚡ Bolt: Optimize drw_map by replacing XSync with XFlush

[google-labs-jules]

💡 What: Replaced XSync(drw->dpy, False) with XFlush(drw->dpy) in drw_map (drw.c).
🎯 Why: XSync forces a round-trip to the X server, blocking the client until the server processes the request. This causes unnecessary latency during frequent drawing operations like status bar updates. XFlush sends the requests without waiting, which is sufficient because X11 guarantees request ordering.
📊 Impact: Reduces client-side latency during redraws, making the UI feel more responsive.
🔬 Measurement: Verified by compiling with make clean && make. No regressions in build.

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PR created automatically by Jules for task 7729798404192147833 started by @paperbenni

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