What (a) were the total office hours lost due to (i) load shedding, (ii) office closures, (iii) water outages, (iv) system downtime and (v) no online verification scanners at health facilities in Quarter 4 of the 2022-23 financial year, (b) was the total percentage of uptime of the Home Affairs civic services system hosted by the State Information Technology Agency and (c) number of the 48 142 late registrations of birth as a result of this downtime have been finalised?