[test][Concurrency] Disable async_task_base_priority.swift on single_threaded_concurrency

kateinoigakukun · kateinoigakukun · commit 515dff1ee7fe · 2023-10-11T18:14:43.000Z
The test case blocks a thread and it blocks the whole execution with
cooperative global executor.
diff --git a/test/Concurrency/async_task_base_priority.swift b/test/Concurrency/async_task_base_priority.swift
@@ -13,6 +13,7 @@
 // UNSUPPORTED: DARWIN_SIMULATOR=watchos
 // UNSUPPORTED: DARWIN_SIMULATOR=ios
 // UNSUPPORTED: DARWIN_SIMULATOR=tvos
+// UNSUPPORTED: single_threaded_concurrency
 
 import StdlibUnittest
 import Dispatch
