The State Legislatures won't take action until there are Court rulings calling vote totals into question.

Those rulings will come.

I suggest you read Justice Alito's orders in the Pennsylvania case.
This case is yet to be decided on the merits, but it is likely that the US Supreme Court will rule that the Pennsylvania Supreme Court had no authority to water down the Pennsylvania Legislatures rules for mail in voting for Presidential elections.

If they do, then the entire vote in Pennsylvania will be tainted because it is impossible to find those ballots which had defective outer envelopes (missing matching signatures or valid postmarks).