Mouse button XButton1 was renamed to Extra1 in SFML 3 #587

Job	Run time
linux	4m 48s
linux-per-backend	4m 47s
linux-latest-dev	3m 54s
linux-oldest	2m 35s
windows-sfml-sdl	2m 14s
windows-static-mt	5m 0s
windows-clang	5m 31s
windows-oldest	5m 28s
android-sdl	5m 20s
android-sfml-graphics	1m 28s
ios-sdl	2m 28s
ios-sfml-graphics	1m 16s
macos	2m 55s
nightly-build-windows-visual-studio	5m 56s
	53m 40s

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