We were unconditionally accessing the keyboard_buttons array, even if the bottom_osk_index was for the numberpad, leading to an out of bounds array access. Fix this by accessing the proper array for the current button when the index is for the numberpad.
Confirm means that the text has already been checked by the application to be correct, but is asking the user for confirmation.
The confirmation text itself seems to be corrupted though, this needs to be investigated.
Fixes the software keyboard in Famicom Detective Club: The Missing Heir
