Add a `UnifiedBonePtr::constflag()` function to grab the `constflag` from the bone, so that it doesn't have to be passed as a separate parameter to every drawing-related function. No functional changes.
Add a `UnifiedBonePtr::constflag()` function to grab the `constflag` from the bone, so that it doesn't have to be passed as a separate parameter to every drawing-related function. No functional changes.