Since the beginning of the 2023 academic year, what is the total number of learners of South African origin (a) with verified ID numbers are on the Learner Unit Record Information and Tracking System (LURITS), (b) without ID numbers were submitted on LURITS, (c) were admitted, subject to the condition that they will be excluded should they not produce the required identity documents and (d) were excluded for not producing the requisite documents?