Can't use item ID in /testforblock

I encountered a problem when I updated the game to 1.19.71. The problem is with the syntax of the "testforblock" command. Now it is not possible to enter the item ID in the command. For example, I need the command block to activate when I press a button. Previously, this could be done simply by specifying the ID of the pressed button. Please advise if the syntax has changed for the command, as it did for the "execute" command. If it has changed, please tell me what it looks like now.