Synchronously load a GLB file (provided as a base64 data-URL from webpack
asset/inline) and return a cloned scene Group.
Parses the GLB binary directly (no async GLTFLoader). The parsed scene is
memoized — subsequent calls return .clone(), giving each caller an
independent object hierarchy while sharing BufferGeometry and Material data.
Synchronously load a GLB file (provided as a base64 data-URL from webpack asset/inline) and return a cloned scene Group.
Parses the GLB binary directly (no async GLTFLoader). The parsed scene is memoized — subsequent calls return
.clone(), giving each caller an independent object hierarchy while sharing BufferGeometry and Material data.