fix: connecting path transition

Fix a rare race condition where the PPC still had the
finish row course while the pathfinder was working on
the connecting path.

The PPC called the strategy's listeners with the finish
row course waypoint index, which was interpreted by the
listener as a main fieldwork course waypoint, leading to
start a headland turn already passed.

#735

Author: Peter Vaiko

scripts/ai/strategies/AIDriveStrategyFieldWorkCourse.lua

@@ -613,6 +613,9 @@ function AIDriveStrategyFieldWorkCourse:startConnectingPath(ix)
         self:debug('Connecting path has %d waypoints, start pathfinding to target waypoint %d, zOffset %.1f',
                 #connectingPath, targetWaypointIx, zOffset)
         self.state = self.states.WAITING_FOR_PATHFINDER
+        -- to have a course set while waiting for the pathfinder and make sure that the course known to the PPC
+        -- is the same as the one we are using
+        self:startCourse(self.rawConnectingPath, 1)
         self.pathfinderController:findPathToNode(context, targetNode, 0, zOffset, 1)
     end
 end