"No archived" folder filter is handled inconsistent with tdesktop app when a chat is both included and excluded

Checklist

• I am reporting an issue in existing functionality that does not work as intended
• I've searched for existing GitHub issues

Description

Behavior between iOS and tdesktop clients regarding chat filtering in folders is inconsistent (telegramdesktop/tdesktop#8427) and tdesktop devs say that their behavior is correct.

Steps to Reproduce

1. Choose an arbitrary chat X.
2. Archive the chat X.
3. Create a folder which "includes" the chat X (as an individual chat, not by chat type), but "excludes" all archived chats.
4. Check whether the folder shows the chat X in tdesktop.
5. Check whether the folder shows the chat X in mobile app (I've used iOS).

Expected Behavior

Behavior should be consistent between tdesktop and iOS app: either chat X is consistently shown both in tdesktop and mobile app, or the folder is consistently empty.

Actual Behavior

Behavior is inconsistent: tdesktop 2.3 shows the chat X (i.e. its exclusion by "archived" does not work), but iOS app 7.0 does not (i.e. it excludes all archived chats, even if they're explicitly listed in the "archived" section).

Environment

Device: iPhone

iOS version: 13.3.1

App version: 7.0

Start by reproducing the listed folder-filter scenario on the iOS app with an archived chat that is explicitly included and all archived chats excluded. Compare the result with the linked tdesktop behavior and trace the iOS chat-folder filtering area; done means the two clients handle this case consistently, with a regression check for the reproduction steps.