Stop the Sample app needing to be rebuilt even when nothing has changed#3558

1 commit merged intoCommunityToolkit:masterCommunityToolkit/WindowsCommunityToolkit:masterfrom

mrlacey:i3332-SampleAppBuildsUnnecessarilymrlacey/UWPCommunityToolkit:i3332-SampleAppBuildsUnnecessarilyCopy head branch name to clipboard