Merge pull request swiftlang#28136 from xymus/fix-simulator-test

Fix test rdar56710317.swift for the iOS simulator

Author: xymus

validation-test/Sema/SwiftUI/rdar56710317.swift

@@ -1,5 +1,6 @@
 // RUN: %target-typecheck-verify-swift -target x86_64-apple-macosx10.15 -swift-version 5
 // REQUIRES: objc_interop
+// REQUIRES: OS=macosx
 
 import SwiftUI
 import Combine