You can edit the Pronto Hex for a button roughly the same way I described in that other post for getting the Pronto Hex.

Make a new button for this, since you don't want to disturb the "disp int." function of the current button.

Put in this Pronto Hex

0000 006D 0000 000C 0006 011B 0006 00BB 0006 011B 0006 011B 0006 011B 0006 00BB 0006 011B 0006 011B 0006 00BB 0006 011B 0006 00BB 0006 070A

Test that single presses of that new button work roughly like the original Disp Int button. But two presses in a row of the new button should not act like two presses of the original, because the new one shouldn't have the RECS80 toggle bit toggling. I'm not sure exactly how two presses in a row would act. Best guess is the second press wouldn't work, then the button would do nothing until some other function has been used, then it should work again once.

Then make a button that aliases that new button many times in sequence (with no added delays). That should act like a single long press.