test: mark test-inspector-multisession-ws as flaky

Refs: #34730
PR-URL: #57001
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>

Author: aduh95

test/parallel/parallel.status

@@ -26,6 +26,8 @@ test-worker-nearheaplimit-deadlock: PASS, FLAKY
 [$system==linux]
 # https://github.com/nodejs/node/issues/54803
 test-performance-function: PASS, FLAKY
+# https://github.com/nodejs/node/issues/34730
+test-inspector-multisession-ws: PASS, FLAKY
 # https://github.com/nodejs/node/issues/39368
 test-domain-error-types: PASS,FLAKY
 # https://github.com/nodejs/node/issues/47420