gs-app-context-bar: Tweak fallback description
It’s clearer to the user to talk about what the app can (probably) do than what it can’t (probably) do.
In this fallback case, the app has no metadata telling us what it can do, so we can only assume it’s a generic desktop app.
Signed-off-by: Philip Withnall pwithnall@endlessos.org
Fixes: #1329 (closed)
Closes #1329 (closed)