Fix test targets that depend on macros and `swift-testing`#7508

MaxDesiatov merged 3 commits intomainswiftlang/swift-package-manager:mainfrom

jgrynspan/fix-test-products-with-cross-compilation-supportswiftlang/swift-package-manager:jgrynspan/fix-test-products-with-cross-compilation-supportCopy head branch name to clipboard