⚡ 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.
🎯 Why: XSync forces a blocking round-trip to the X server, causing latency in the main thread during every draw operation. This is unnecessary for simple drawing commands where we don't need to read back data or handle errors immediately.
📊 Impact: Eliminates round-trip latency for all bar updates and window redraws handled by drw. This improves the perceived responsiveness of the window manager, especially during high-frequency updates.
🔬 Measurement: Verified by make clean && make to ensure correct compilation. Theoretical performance gain is 1 RTT (Round Trip Time) per draw call.

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PR created automatically by Jules for task 16017061530732502201 started by @paperbenni

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