Does whatever is necessary to unhide a room.
Shows a confirmation screen first, unless the only reason is "TempHidden".
This is called when clicking a room in the list and also, if a confirmation is shown, called again when the confirm button is clicked.
Parameters
C: number
Index of the room within ChatSearchHiddenResult
Confirmed: boolean
False when clicking on room list, true when clicking Confirm button
Does whatever is necessary to unhide a room. Shows a confirmation screen first, unless the only reason is "TempHidden". This is called when clicking a room in the list and also, if a confirmation is shown, called again when the confirm button is clicked.