Accidentally reported iMessages as junk

I was cleaning up my text messages and selected multiple ones to delete and accidentally selected the report as junk button. I never seen that button before until now that is why I quickly hit it as it used to only be just the select button. How do I undo what I just did? I don’t remember all of the names I had selected to delete so there is no way I can go to each individual name.

And may may I suggest to Apple to but the delete button as the first option and also have a follow up question asking “do you really want to delete or report to junk” that will give users the chance to back out of the choice.