What (a) is the total number of legal and/or medical malpractice litigation cases that were instituted against his department in the 2021-22 financial year, (b)(i) total amount has been spent in compensation with regard to the specified cases and (ii) is the breakdown of the total amount according to each province in terms of (aa) pending and (bb) resolved cases and (c) are the most common types of issues related to the specified claims?