update aurora, add comment explaining king bulblin 1 strange behavior

the game saves a flag when the player hits king bulblin at least once, which makes subsequent loads (including king bulblin 2) have 1 less "health" as lap_num for the boar is set to 1 during creation, as it checks the flag.

src/d/actor/d_a_e_wb.cpp

@@ -5852,6 +5852,8 @@ static int daE_WB_Create(fopAc_ac_c* actor) {
             daE_WB_Execute(i_this);
             c_start = 0;
 
+            // Note: this flag makes king bulblin 1 instant die when set, as it only requires 2 laps
+            // for insta-kill to trigger.
             if (dComIfGs_isEventBit(dSv_event_flag_c::saveBitLabels[88])) {
                 i_this->lap_num = 1;
             }