Update session icon on notification bell

[Martin Koller]

Hi all,

I'm seeing a regression since commit 674243f126bb3bd72ce823ff0144b870d64bcf21
which manifests itself in the way that the window icon is changed to the bell icon
but never changed back to the konsole icon.
I'm using liquidshell where the taskbar listens for KWindowSystem::windowChanged
and sets the icon from KWindowSystem::icon into the taskbar.

But to make a correct fix, I first wanted to understand why the change was introduced
in the first place, however I'm missing something:
The test plan from the phabricator task (also mentioned in the commit) does not show
any bell icon for me.

Therefore my question: where should I see the bell icon ?
I did look through all settings, but there is no way to activate an icon display
in the tab.
I do this
    1. Start Konsole and create 2 sessions (tabs) from the same profile
         (for example, the default profile)
    2. In one tab run `sleep 3; tput bel`
    3. Switch to the other tab and wait 3 seconds

but nowhere is the icon to be seen.
-- 
Best regards/Schöne Grüße

Martin
A: Because it breaks the logical sequence of discussion
Q: Why is top posting bad?

()  ascii ribbon campaign - against html e-mail 
/\                        - against proprietary attachments

Geschenkideen, Accessoires, Seifen, Kulinarisches: www.lillehus.at