Canvas tests still didn't compile in some cases due to missing include #581

Job	Run time
linux-latest-dev	2m 59s
linux-per-backend	4m 18s
linux-oldest	2m 33s
android-sdl	4m 38s
linux	5m 2s
android-sfml-graphics	1m 55s
macos	3m 42s
windows-clang	4m 47s
windows-sfml-sdl	2m 19s
windows-oldest	6m 11s
windows-static-mt	5m 22s
ios-sdl	3m 9s
ios-sfml-graphics	1m 6s
nightly-build-windows-visual-studio	5m 47s
	53m 48s

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