Once again, I told you initially that your point is false.Wrong. State legislatures do not have the power to override the election held in their states. What you are referring to is the state legislatures can select how the winning candidates electors are chosen. There are two ways used by all states, either a party convention or party committee.
Even so, Georgia’s law is already on the books and passing an ex post facto law would be unconstitutional itself.
§ 2. Failure to make choice on prescribed day
Whenever any State has held an election for the purpose of choosing electors, and has failed to make a choice on the day prescribed by law, the electors may be appointed on a subsequent day in such manner as the legislature of such State may direct.