[wasm][test] Disable a test that depends on swifttailcc

Author: kateinoigakukun

test/IRGen/async/run-call-dynamic-void_to_void.swift

@@ -9,6 +9,9 @@
 // REQUIRES: concurrency
 // REQUIRES: concurrency_runtime
 // UNSUPPORTED: back_deployment_runtime
+// LLVM does not support swifttailcc for WebAssembly target for now
+// See https://github.com/apple/swift/issues/69333
+// UNSUPPORTED: CPU=wasm32
 
 import _Concurrency