Verbatim copies of the 40250 flying-object units and the effect/fly
Python modules replace the pending CFlyingManager stand-in and the two
module stubs; initeffect/initfly run after initnet as in 40250 and the
flying manager gets the background as its map manager.
CMapManager::GetTerrainHeight is added over the native height tiles.
login_flow checks playersettingmodule registered the indexed fly data.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
