While the Fifth Circuit lifted that initial decision, it did not issue a full opinion. If the law returns to the Fifth Circuit, as it likely will, the appeals court will have a chance to do so, at which point it will likely return to the Supreme Court, which will have an opportunity to issue a full opinion on the merits.
The case is Netchoice v. Paxton, No. 21A720 in the Supreme Court of the United States.