add more optionals and casserts for windows

components/detournavigator/recastmeshbuilder.cpp

@@ -17,6 +17,7 @@
 #include <LinearMath/btAabbUtil2.h>
 
 #include <algorithm>
+#include <cassert>
 #include <tuple>
 
 namespace DetourNavigator

components/detournavigator/recastmeshmanager.hpp

@@ -9,9 +9,10 @@
 
 #include <osg/Vec2i>
 
+#include <list>
 #include <map>
+#include <optional>
 #include <unordered_map>
-#include <list>
 
 class btCollisionShape;