Isort preparations (#16555)

* Don't treat typing as an "in-between" module for import order

That was a < 3.5 era thing.

* Tighten scope of some pylint unused-import disables

To avoid isort moving a top level one around, undesirably broadening its
scope.

homeassistant/data_entry_flow.py

@@ -1,8 +1,8 @@
 """Classes to help gather user submissions."""
 import logging
+from typing import Dict, Any, Callable, Hashable, List, Optional  # noqa pylint: disable=unused-import
 import uuid
 import voluptuous as vol
-from typing import Dict, Any, Callable, Hashable, List, Optional  # noqa pylint: disable=unused-import
 from .core import callback, HomeAssistant
 from .exceptions import HomeAssistantError