Notwithstanding any other provision of this chapter, the judgment in the action is not binding or conclusive on the following:
(a) The state, unless individually joined as a party to the action.
(b) The United States, unless the United States is individually joined as a party to the action and federal law authorizes judgment in the action to be binding or conclusive as to its interests.
(Amended by Stats. 1986, Ch. 271, Sec. 2.)