Replace redundant list comprehension with generator (#3040)

* Replace redundant list comprehension with generator

* Partially revert

There is no such thing as a "tuple comprehension":
https://stackoverflow.com/questions/52285419/aggregating-an-async-generator-to-a-tuple#52285420

Fixes CI error:
FAILED tests/test_group.py::test_create_hierarchy_existing_nodes[zarr2-async-array-memory] - TypeError: 'async_generator' object is not iterable

Author: DimitriPapadopoulos

tests/test_store/test_core.py

@@ -203,7 +203,7 @@ def test_valid() -> None:
         Test that path normalization works as expected
         """
         paths = ["a", "b", "c", "d", "", "//a///b//"]
-        assert _normalize_paths(paths) == tuple([normalize_path(p) for p in paths])
+        assert _normalize_paths(paths) == tuple(normalize_path(p) for p in paths)
 
     @staticmethod
     @pytest.mark.parametrize("paths", [("", "/"), ("///a", "a")])