test: mark test-inspector-network-fetch as flaky on Windows

PR-URL: nodejs#59091
Refs: nodejs#59090
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Ryuhei Shima <shimaryuhei@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>

Author: joyeecheung

test/parallel/parallel.status

@@ -26,6 +26,8 @@ test-async-context-frame: PASS, FLAKY
 test-runner-run-watch: PASS, FLAKY
 # https://github.com/nodejs/node/issues/56794
 test-fs-cp: PASS, FLAKY
+# https://github.com/nodejs/node/issues/59090
+test-inspector-network-fetch: PASS, FLAKY
 
 # https://github.com/nodejs/node/issues/56751
 test-without-async-context-frame: PASS, FLAKY