Link to SYSTEM_JAVA_HOME on windows (#40806)

We don't always have java home defined in packaging tests, as we want to
use the bundled jdk most of the time. This commit fixes the java home
with special characters test to link to SYSTEM_JAVA_HOME on windows.

closes #40797

qa/vagrant/src/main/java/org/elasticsearch/packaging/test/ArchiveTestCase.java

@@ -203,7 +203,7 @@ public abstract class ArchiveTestCase extends PackagingTestCase {
             final Shell sh = new Shell();
             try {
                 // once windows 2012 is no longer supported and powershell 5.0 is always available we can change this command
-                sh.run("cmd /c mklink /D 'C:\\Program Files (x86)\\java' $Env:JAVA_HOME");
+                sh.run("cmd /c mklink /D 'C:\\Program Files (x86)\\java' $Env:SYSTEM_JAVA_HOME");
 
                 sh.getEnv().put("JAVA_HOME", "C:\\Program Files (x86)\\java");
 
@@ -218,7 +218,7 @@ public abstract class ArchiveTestCase extends PackagingTestCase {
 
             } finally {
                 //clean up sym link
-                sh.run("cmd /c del /F /Q 'C:\\Program Files (x86)\\java' ");
+                sh.run("cmd /c rmdir 'C:\\Program Files (x86)\\java' ");
             }
         });