[GTK] Reports wrong mouse coordinates when starting a drag #2119 #9761

Job	Run time
Detect changed paths	4s
Event File	4s
Build (Linux) (21, gtk4, wayland) / build	11m 27s
Build (Linux) (21, gtk3, x11) / build	10m 17s
Build (Linux) (21, gtk4, x11) / build	9m 39s
Build (Windows)	0s
Build (macOS)	0s
	31m 31s

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