To ask the Scottish Government, further to the answer to question S6W-16134 by Patrick Harvie on 28 March 2023, what specific delivery programmes and support are available to help people to move immediately to zero or low emissions heating systems, in the event there is a sudden unexpected failure of a fossil fuel boiler, and what the (a) average and (b) shortest time was in (i) 2020-21, (ii) 2021-22 and (iii) 2022...