Update Avalonia sample with latest changes #4121

Job	Run time
build-packages	6m 24s
build-solution (Debug, x64)	12m 41s
build-solution (Debug, arm64)	19m 20s
build-solution (Release, x64)	20m 6s
build-solution (Release, arm64)	20m 25s
verify-packages (net7.0)	3m 3s
verify-packages (net6.0)	8m 57s
verify-packages (net472)	1m 50s
run-tests-d3d12ma (net7.0)	6m 7s
run-tests-d3d12ma (net6.0)	6m 44s
run-tests (net7.0)	7m 0s
run-tests (net6.0)	8m 42s
run-tests (net472)	9m 49s
run-samples (net7.0)	5m 16s
run-samples (net6.0)	5m 18s
run-samples (net472)	5m 6s
run-tests-win2d (Debug, uwp)	6m 9s
run-tests-win2d (Debug, wasdk)	5m 27s
run-tests-win2d (Release, uwp)	10m 3s
run-tests-win2d (Release, wasdk)	6m 37s
run-samples-aot (x64)	8m 7s
run-samples-aot (arm64)	3m 31s
publish-nightlies-github	18s
publish-nightlies-azure-devops	26s
	3h 7m 26s

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