Move MacCatalyst arm64 leg definitions from runtime-staging to runtime-extra-platforms pipeline#65427

MaximLipnin merged 3 commits intodotnet:maindotnet/runtime:mainfrom

MaximLipnin:move_catalyst_arm64_out_of_stagingMaximLipnin/runtime:move_catalyst_arm64_out_of_stagingCopy head branch name to clipboard