[PATCH] libtaskmanager: show Comment for launcher icons when appropriate

[PATCH] libtaskmanager: show Comment for launcher icons when appropriate

Right now, launcher icons get a caption equal to the app's GenericName,
if one is set in the metadata. If not, it gets no caption.

This differs from what Kicker and Kickoff Manager do: a more complex
behavior to show the Comment if the app has no GenericName or if its
GenericName is equal to its Name. Let's replicate the same logic here.

BUG: 504431
FIXED-IN: 6.4.0

(cherry picked from commit ae39f3219d6fc849fe8de0d1c165a572598082fe)

Co-authored-by: Nate Graham <nate@kde.org>
Gbp-Pq: Name upstream_45784326_libtaskmanager-show-Comment-for-launcher-icons-when-appropriate.patch