[0.3.4] Support octomap v1.9.0

[JackBoosY]

Hi, I want to upgrade fcl to the latest version 0.3.4 in vcpkg, but I encountered the following error in building fcl:

broadphase_dynamic_AABB_tree_array.cpp(136): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'
broadphase_dynamic_AABB_tree_array.cpp(231): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'
broadphase_dynamic_AABB_tree_array.cpp(313): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'
broadphase_dynamic_AABB_tree_array.cpp(394): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'
broadphase_dynamic_AABB_tree.cpp(137): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'
broadphase_dynamic_AABB_tree.cpp(230): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'
broadphase_dynamic_AABB_tree.cpp(310): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'
broadphase_dynamic_AABB_tree.cpp(397): error C2039: 'getChild': is not a member of 'octomap::OcTreeNode'

Please fix them. Thanks.

Related: #6618.