NullRestricted Valhalla attribute cfdump support

[theresa-m]

Related: #17340

Test Class

I compiled this using https://github.com/openjdk/valhalla/tree/lw5

class Test {
        static FieldTest! ft;
}
value class FieldTest {
        public implicit FieldTest();
}

Classfilewriter.cpp changes

$~/openj9builds/openj9-openjdk-jdk.valuetypes/build/macosx-aarch64-server-release/vm/runtime/cfdump -t Test.class
Wrote 267 bytes to output file Test.j9class
$ ~/openj9builds/openj9-openjdk-jdk.valuetypes/build/macosx-aarch64-server-release/vm/runtime/cfdump Test.j9class 
class Test extends java.lang.Object
{
    static FieldTest! ft;
    void <init>();
}

Main.c changes:

~/openj9builds/openj9-openjdk-jdk.valuetypes/build/macosx-aarch64-server-release/vm/runtime/cfdump -d Test.class

…
Fields (1):
  Name: 9 -> ft
  Signature: 10 -> LFieldTest;
  Access Flags: 0x8 ( 
  access: default static )
  Attributes (1):
    NullRestricted:
…

[hangshao0]

Jenkins test sanity,extended xlinuxval jdknext