Ensure the app's window is associated with its Desktop Entry #2386
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This is used to associate the Desktop Entry with the running application, e.g. in taskbars, panels, and docks.Set
StartupWMClass
so that the Desktop Entry gets properly associated with the running app window.When the app is associated with its Desktop Entry, the DE knows which icon to use for the app's window.
With this PR, the window name and icon show correctly in the dock as:

Inspecting with GNOME's Looking Glass (

Alt+F2
,lg
), shows the WM Class for the app's window is unsurprisinglyNexusMods.App
.After this PR, it shows association with the Desktop Entry:

EDIT: moved the single window stuff to #2387