Merge pull request #72849 from hborla/6.0-unsupported-data-race-check-config

[6.0][NFC] Mark a concurrency test as unsupported in the freestanding configuration.

Author: hborla

test/Concurrency/actor_data_race_checks_minimal.swift

@@ -3,6 +3,7 @@
 // REQUIRES: executable_test
 // REQUIRES: concurrency
 // REQUIRES: concurrency_runtime
+// UNSUPPORTED: freestanding
 
 @preconcurrency @MainActor
 protocol P {