Icon for debugger in the toolbar

[badetitou]

It would be great to have a different icon for the debugger in the toolbar.
In Pharo12, we always have the same icons

In the above example, the same icon for a playground and a debugger.
It forces to read to retrieve its debugger

[badetitou]

From what I dig so far, the bugs comes from a modification in the way to deal with Icon.
It led to a modification of the TaskbarItemMorph>>#initializeFor: aTaskbar method. To use the line of the

self iconFormSetNamed: self model taskbarIconName

However, self model taskbarIconName does not return always the icon we want.
Can modify the default behavior of taskbarIconName or the assigned model. I don't know what would be the best for now