Fix build break in JDK8,11 due to undefined targetMethodFromMemberName

[dsouzai]

This PR fixes a build break in JDK8 and JDK11 introduced by #20373 which occurred because J9VM_OPT_OPENJDK_METHODHANDLE is not defined.

[dsouzai]

jenkins compile xlinux jdk8,jdk11,jdk17

[keithc-ca]

This needs more work; trying to build jdk11:

/home/keithc/space/openj9/jdk11/openj9/runtime/compiler/runtime/SymbolValidationManager.cpp:1591:18: error: 'class TR_J9VM' has no member named 'isInvokeCacheEntryAnArray'
       if (_fej9->isInvokeCacheEntryAnArray(invokeCacheArray))
                  ^~~~~~~~~~~~~~~~~~~~~~~~~

[dsouzai]

Ok, built both JDK11 and JDK21 manually and both passed, so should be good to go now.

[pshipton]

jenkins compile zlinux jdk8

[pshipton]

This build is far enough to confirm no compilation issue with jdk8.