[main] Source code updates from dotnet/dotnet#2825

dotnet-maestro[bot] wants to merge 8 commits into

maindotnet/command-line-api:mainfrom

darc-main-618890fd-928f-453a-8b0a-4acc43fdfc1edotnet/command-line-api:darc-main-618890fd-928f-453a-8b0a-4acc43fdfc1eCopy head branch name to clipboard