When switching to temperature control group the button input mode must be set to 65/heating pushbutton
implements #18333
@chhitz in the ticket Wolfgang writes that moving the device to the heating group should set the button input to 0/standard, I do not know if he rather meant "when switching to any group except for temperature control", right now I implemented it without limiting it to the heating group. Please let me know if that's OK or if more adjustments are required. Also see my comment to you in the ticket.