8280896: java/nio/file/Files/probeContentType/Basic.java fails on Windows 11

Reviewed-by: jpai, bpb

Author: Andrey Turbanov

test/jdk/java/nio/file/Files/probeContentType/Basic.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2022, 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
@@ -161,7 +161,7 @@ public static void main(String[] args) throws IOException {
                 new ExType("doc", List.of("application/msword")),
                 new ExType("docx", List.of("application/vnd.openxmlformats-officedocument.wordprocessingml.document")),
                 new ExType("gz", List.of("application/gzip", "application/x-gzip")),
-                new ExType("jar", List.of("application/java-archive", "application/x-java-archive")),
+                new ExType("jar", List.of("application/java-archive", "application/x-java-archive", "application/jar")),
                 new ExType("jpg", List.of("image/jpeg")),
                 new ExType("js", List.of("text/javascript", "application/javascript")),
                 new ExType("json", List.of("application/json")),