Detect Error pattern without ": " + message.

(cherry picked from commit 7dc6ee9)

Author: woess

graal-js/src/com.oracle.truffle.js.test.external/src/com/oracle/truffle/js/test/external/suite/TestRunnable.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -62,7 +62,7 @@
 
 public abstract class TestRunnable implements Runnable {
     private static final int LONG_RUNNING_TEST_SECONDS = 55;
-    protected static final Pattern EXTERNAL_LAUNCHER_ERROR_PATTERN = Pattern.compile("^(\\w+Error)(?::|\\s+at)");
+    protected static final Pattern EXTERNAL_LAUNCHER_ERROR_PATTERN = Pattern.compile("^(\\w+Error)(?:: .*)?\\R");
     protected static final Pattern EXTERNAL_LAUNCHER_EXCEPTION_PATTERN = Pattern.compile("^([\\w\\.]+Exception):");
 
     private static final ConcurrentMap<Integer, Source[]> HARNESS_SOURCES = new ConcurrentHashMap<>();