[BUG]: Horizontal splitter position is reset in config if article list filters are enabled

[Ac314]

Brief description of the issue

This is related to #1271. It works with a clear config but will stop working if article list filter is enabled (yes, it is crazy).

How to reproduce the bug?

1. Start with the clean config, create default channel, do not load any default feeds.
2. Enable "Start application hidden" in Tray area settings.
3. Move horizontal splitter - splitter_messages_vertical will be set in config.ini.
4. Set article list filter (in article list toolbar) to "Show unread articles"
5. Restart the application but do not do anything. It will start minimized in tray. splitter_messages_vertical value is still present in config.ini.
6. Click the application icon in tray - splitter_messages_vertical in config.ini will be reset to "15, 15".

What was the expected result?

splitter_messages_vertical value is kept in config.ini.

What actually happened?

splitter_messages_vertical value in config.ini is reset.

Debug log

rssguard.log

Operating system and version

Version: 4.6.6 (built on Windows/AMD64)
Revision: 2edb447
Build date: 3/19/24 1:23 PM
Qt: 6.5.3 (compiled against 6.5.3)