tennm_mac in m18x18_sumof2 mode on Agilex 7 - spurious systolic register inserted in Quartus 25.3

Device: Intel Agilex 7 Quartus version:  Quartus Prime Version 25.3.0 Build 109 09/24/2025 SC Pro Edition Atom: tennm_mac Mode: m18x18_sumof2 with pre-adder (operand_source_may = "preadder") Desc...