8350786: Some java/lang jtreg tests miss requires vm.hasJFR

Reviewed-by: mdoerr
Backport-of: d6d94472c21b1fa4839f548b85908967057c3f07

Author: MBaesken

test/jdk/java/lang/Thread/ThreadSleepEvent.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2023, 2025, 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
@@ -24,6 +24,7 @@
 /**
  * @test
  * @summary Test that Thread.sleep emits a JFR jdk.ThreadSleep event
+ * @requires vm.hasJFR
  * @modules jdk.jfr
  * @run junit ThreadSleepEvent
  */

test/jdk/java/lang/Thread/virtual/JfrEvents.java

@@ -24,7 +24,7 @@
 /**
  * @test
  * @summary Basic test for JFR jdk.VirtualThreadXXX events
- * @requires vm.continuations
+ * @requires vm.continuations & vm.hasJFR
  * @modules jdk.jfr java.base/java.lang:+open jdk.management
  * @library /test/lib
  * @run junit/othervm --enable-native-access=ALL-UNNAMED JfrEvents