test: mark test-without-async-context-frame flaky on windows

Refs: #56751
Refs: https://ci.nodejs.org/job/node-test-binary-windows-js-suites/32254/RUN_SUBSET=0,nodes=win2019-COMPILED_BY-vs2022/testReport/(root)/parallel/test_without_async_context_frame/
PR-URL: #56753
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

Author: jasnell

test/parallel/parallel.status

@@ -30,6 +30,9 @@ test-async-context-frame: PASS, FLAKY
 # https://github.com/nodejs/node/issues/54534
 test-runner-run-watch: PASS, FLAKY
 
+# https://github.com/nodejs/node/issues/56751
+test-without-async-context-frame: PASS, FLAKY
+
 # Windows on ARM
 [$system==win32 && $arch==arm64]