test: disable Maglev in near-heap-limit worker test

The test expects the worker to run out of memory during startup while
creating the message port. With Maglev enabled, the tiny worker heap
can be exhausted earlier while generating deoptimization data, which
changes the failure mode.

Disable Maglev so the induced OOM reaches the path covered by the test.

Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: openai:gpt-5.5
PR-URL: #63398
Refs: https://github.com/nodejs/reliability/blob/main/reports/2026-05-18.md#jstest-failure
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Richard Lau <richard.lau@ibm.com>

Author: trivikr

test/parallel/test-worker-nearheaplimit-deadlock.js

@@ -1,7 +1,9 @@
-// Flags: --no-node-snapshot
+// Flags: --no-node-snapshot --no-maglev
 // With node snapshot the OOM can occur during the deserialization of the
 // context, so disable it since we want the OOM to occur during the creation of
 // the message port.
+// With Maglev, the OOM can occur during compilation instead, so disable it for
+// the same reason.
 'use strict';
 const common = require('../common');
 const assert = require('assert');