Fix new game guard 3 (#6126)
Closes#6126
See merge request OpenMW/openmw!976
(cherry picked from commit 89ca56632c6bc37f07e430e7f5cd23d855610b19)
a3942a1e Remove redundant check for y coordinate in inRange function
cc08a45c Move include where it is needed
7e1630a7 Remove redundant getPolyHeight wrapper
793c30ab Check dtNavMeshQuery::getPolyHeight status
a54c4bc2 Check dtNavMeshQuery::findStraightPath status
94e460ba Use proper check for distance
5624fe19 Consider path not found when there is navmesh query error