8323994: gtest runner repeats test name for every single gtest assertion

Backport-of: 1aae980c549741cf5fc5ca51f3c299285bafa49d

Author: Andrew Lu

test/hotspot/jtreg/gtest/GTestResultParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -57,7 +57,10 @@ public GTestResultParser(Path file) {
                             testCase = xmlReader.getAttributeValue("", "name");
                             break;
                         case "failure":
-                            failedTests.add(testSuite + "::" + testCase);
+                            String failedStr = testSuite + "::" + testCase;
+                            if (!failedTests.contains(failedStr)) {
+                                failedTests.add(failedStr);
+                            }
                             break;
                         default:
                             // ignore