[Test] Disabled two Concurrency tests for back deploy.

Author: nate-chandler

test/Concurrency/Runtime/async_task_yield.swift

@@ -5,6 +5,8 @@
 
 // https://bugs.swift.org/browse/SR-14333
 // UNSUPPORTED: OS=windows-msvc
+// UNSUPPORTED: use_os_stdlib
+// UNSUPPORTED: back_deployment_runtime
 
 @available(macOS 9999, iOS 9999, watchOS 9999, tvOS 9999, *)
 protocol Go: Actor {

test/Concurrency/Runtime/data_race_detection.swift

@@ -7,6 +7,7 @@
 
 // rdar://76038845
 // UNSUPPORTED: use_os_stdlib
+// UNSUPPORTED: back_deployment_runtime
 
 import _Concurrency
 import Dispatch
@@ -57,14 +58,14 @@ actor MyActor {
 struct Runner {
   static func main() async {
     print("Launching a main-actor task")
-    // CHECK: warning: data race detected: @MainActor function at main/data_race_detection.swift:21 was not called on the main thread
+    // CHECK: warning: data race detected: @MainActor function at main/data_race_detection.swift:22 was not called on the main thread
     launchFromMainThread()
     sleep(1)
 
     let actor = MyActor()
     let actorFn = await actor.getTaskOnMyActor()
     print("Launching an actor-instance task")
-    // CHECK: warning: data race detected: actor-isolated function at main/data_race_detection.swift:50 was not called on the same actor
+    // CHECK: warning: data race detected: actor-isolated function at main/data_race_detection.swift:51 was not called on the same actor
     launchTask(actorFn)
 
     sleep(1)