8080225: FileInput/OutputStream/FileChannel cleanup should be improved

Reviewed-by: mchung, plevart, bpb

src/java.base/share/classes/java/io/RandomAccessFile.java

@@ -257,6 +257,7 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
         fd.attach(this);
         path = name;
         open(name, imode);
+        fd.registerCleanup();       // open sets the fd, register the cleanup
     }
 
     /**