Use removeprefix rather than replace to avoid separator deletion

Author: moradology

src/zarr/storage/_fsspec.py

@@ -341,7 +341,7 @@ async def set_partial_values(
     async def list(self) -> AsyncIterator[str]:
         # docstring inherited
         allfiles = await self.fs._find(self.path, detail=False, withdirs=False)
-        for onefile in (a.replace(self.path + "/", "") for a in allfiles):
+        for onefile in (a.removeprefix(self.path + "/") for a in allfiles):
             yield onefile
 
     async def list_dir(self, prefix: str) -> AsyncIterator[str]: