only enable TestPolicyManager in TestEntitlementsRule while evaluating a suite

Author: mosche

test/framework/src/main/java/org/elasticsearch/entitlement/runtime/policy/TestPolicyManager.java

@@ -29,7 +29,7 @@
 
 public class TestPolicyManager extends PolicyManager {
 
-    boolean isActive = true;
+    boolean isActive = false;
     boolean isTriviallyAllowingTestCode = true;
     String[] entitledTestPackages = TEST_FRAMEWORK_PACKAGE_PREFIXES;