[GR-68675] Disable crashing com.oracle.truffle.api.test.polyglot.LoomTest.

PullRequest: graal/21840

Author: tzezula

truffle/src/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/polyglot/LoomTest.java

@@ -47,6 +47,7 @@
 import org.graalvm.polyglot.Context;
 import org.graalvm.polyglot.Value;
 import org.junit.Assume;
+import org.junit.Ignore;
 import org.junit.Test;
 
 import java.io.ByteArrayOutputStream;
@@ -75,6 +76,7 @@ public void testEmbedderVirtualThread() throws Throwable {
     }
 
     @Test
+    @Ignore("GR-68675")
     public void testManyVirtualThreads() throws Throwable {
         Assume.assumeTrue(canCreateVirtualThreads() && !TruffleOptions.AOT);