Fix node snapshot tool breaks encapsulation.

Author: chumer

graal-nodejs/mx.graal-nodejs/mx_graal_nodejs.py

@@ -330,7 +330,10 @@ def build(self):
         mx.run(['python3', join('tools', 'expand-js-modules.py'), outputDir] + [join('lib', m) for m in moduleSet] + macroFiles,
                cwd=_suite.dir)
         if not (hasattr(self.args, "jdt") and self.args.jdt and not self.args.force_javac):
-            mx.run_java(['-cp', mx.classpath([snapshotToolDistribution]), '-Dpolyglot.engine.WarnInterpreterOnly=false',
+            mx.run_java(['-cp', mx.classpath([snapshotToolDistribution]),
+                         '-Dpolyglot.engine.WarnInterpreterOnly=false',
+                         # The snapshot tool breaks the polyglot encapsulation
+                         '-Dpolyglotimpl.DisableClassPathIsolation=true',
                     mx.distribution(snapshotToolDistribution).mainClass,
                     '--binary', '--wrapped', '--outdir=' + outputDirBin, '--indir=' + outputDirBin] + ['--file=' + m for m in moduleSet],
                     cwd=outputDirBin)