ObjectStore.list_dir corrupts directory names due to lstrip vs removeprefix #3753

# /// script                                                                                                                                                   
# requires-python = ">=3.12"
# dependencies = ["zarr>=3", "obstore", "xarray", "numpy"]
# ///
import asyncio, tempfile
import numpy as np, xarray as xr                                                                                                                               
from obstore.store import LocalStore
from zarr.storage import ObjectStore                                                                                                                           
                
tmpdir = tempfile.mkdtemp()                                                                                                                                    
parent_dir = f"{tmpdir}/bucket_root"
filepath = f"{parent_dir}/subdir/data.zarr"                                                                                                                    
                
xr.Dataset({"temp": (("x", "y"), np.arange(12, dtype="float32").reshape(3, 4))}).to_zarr(                                                                      
    filepath, consolidated=False, zarr_format=2
)                                                                                                                                                              
                
store = LocalStore(prefix=parent_dir)
zarr_store = ObjectStore(store=store)

async def main():
    results = [item async for item in zarr_store.list_dir("subdir/data.zarr")]
    print(results)  # ['emp', '.zattrs', '.zgroup'] — 'temp' corrupted to 'emp'                                                                                
                                                                                                                                                                
asyncio.run(main())