Update ProblemList_openjdk21-openj9.txt

Consolidating issues to #1598

openjdk/excludes/ProblemList_openjdk21-openj9.txt

@@ -226,12 +226,12 @@ java/net/InetAddress/InternalNameServiceWithHostsFileTest.java https://github.co
 java/net/MulticastSocket/B6427403.java https://github.ibm.com/runtimes/backlog/issues/715 macosx-all,aix-all
 java/net/MulticastSocket/MulticastAddresses.java https://github.ibm.com/runtimes/backlog/issues/715 macosx-all
 java/net/MulticastSocket/NoSetNetworkInterface.java https://github.ibm.com/runtimes/backlog/issues/655 windows-all
-java/net/MulticastSocket/Promiscuous.java https://github.ibm.com/runtimes/backlog/issues/923 linux-s390x,aix-all
+java/net/MulticastSocket/Promiscuous.java https://github.ibm.com/runtimes/backlog/issues/1598 linux-s390x,aix-all
 java/net/MulticastSocket/PromiscuousIPv6.java https://github.com/adoptium/infrastructure/issues/699 linux-s390x,macosx-all
-java/net/MulticastSocket/SetLoopbackMode.java https://github.ibm.com/runtimes/backlog/issues/923 aix-all
+java/net/MulticastSocket/SetLoopbackMode.java https://github.ibm.com/runtimes/backlog/issues/1598 aix-all
 java/net/MulticastSocket/SetLoopbackModeIPv4.java https://github.ibm.com/runtimes/backlog/issues/707 linux-s390x,macosx-all
 java/net/MulticastSocket/SetOutgoingIf.java https://github.ibm.com/runtimes/backlog/issues/715 macosx-all
-java/net/MulticastSocket/Test.java https://github.ibm.com/runtimes/backlog/issues/923 linux-s390x,aix-all
+java/net/MulticastSocket/Test.java https://github.ibm.com/runtimes/backlog/issues/1598 linux-s390x,aix-all
 java/net/Socket/asyncClose/AsyncClose.java https://github.com/eclipse-openj9/openj9/issues/4560 generic-all
 java/net/SocketPermission/SocketPermissionTest.java https://github.ibm.com/runtimes/backlog/issues/1597 aix-all
 jdk/net/ExtendedSocketOption/DontFragmentTest.java https://github.com/adoptium/aqa-tests/issues/3637 linux-all