Install the GNOME shortcut this already knew how to install

install_shortcut(), remove_shortcut(), shortcut_status() and desktop_name()
were added and nothing called them: the settings window and the command line
both still went straight to the KDE ones. On GNOME, pressing Install ran
kwriteconfig6, which is not there, and the three interface strings written for
this never appeared. README said the settings window installs a GNOME or KDE
shortcut, and it installed neither.

Both callers go through the chooser now, and the status line names whichever
desktop answered.

cli.py

@@ -702,7 +702,7 @@ def cmd_shortcut(opts):
     if opts.shortcut == "status":
         rows = {}
         for name, (desktop_id, _label, key) in SHORTCUTS.items():
-            rows[name] = {"registered": hotkey.kde_shortcut_status(desktop_id),
+            rows[name] = {"registered": hotkey.shortcut_status(desktop_id),
                           "configured": conf[key]}
         lines = [f"{name:8} {row['registered'] or '(not installed)':16} "
                  f"setting: {row['configured'] or '(none)'}"
@@ -713,7 +713,7 @@ def cmd_shortcut(opts):
 
     desktop_id, label, key = SHORTCUTS[opts.which]
     if opts.shortcut == "remove":
-        hotkey.remove_kde_shortcut(desktop_id)
+        hotkey.remove_shortcut(desktop_id)
         return out(opts, {"ok": True, "removed": opts.which},
                    f"Removed the {opts.which} shortcut.")
 
@@ -727,7 +727,7 @@ def cmd_shortcut(opts):
         return fail(opts, f"{combo} is also used by: {', '.join(clashes[:6])}. "
                           "Pass --force to install it anyway.", 1, conflicts=clashes)
 
-    ok, message = hotkey.install_kde_shortcut(
+    ok, message = hotkey.install_shortcut(
         combo, ipc.command_for(opts.which), name=label, desktop_id=desktop_id,
     )
     if not ok: