feat: "Start Steam silently in desktop mode" is opt-in (it was always on); an existing systemd unit counts as on and is migrated by the update

lib/menu.sh

@@ -17,7 +17,7 @@ declare -A PARENT=([boot]=gaming [silent]=gaming [glyphs]=gaming [bigpicture]=nv
 # which has CEC like on SteamOS. HDMI refresh boost needs someone at the
 # screen to confirm each step. Extended controller support builds kernel modules for
 # every installed kernel: opt-in.
-NO_PRESELECT=(boot nvsilent cec kpin hdmi extended_controller_support)
+NO_PRESELECT=(boot silent nvsilent cec kpin hdmi extended_controller_support)
 # Feature versions: the Steamify version in which what a component's enable
 # sets up last changed; set it to the new VERSION whenever you change one.
 # Each successful run records it (state "features"); a component that's on
@@ -26,7 +26,7 @@ NO_PRESELECT=(boot nvsilent cec kpin hdmi extended_controller_support)
 # FEATURE_BASELINE.
 FEATURE_BASELINE=2.1.0
 declare -A FEATURE_VERSION=(
-    [gaming]=2.9.0 [boot]=2.1.0 [silent]=2.1.0 [nvidia]=2.10.0 [bigpicture]=2.10.0 [nvsilent]=2.11.0 [theme]=2.1.0 [glyphs]=2.1.0 [single]=2.1.0
+    [gaming]=2.9.0 [boot]=2.1.0 [silent]=2.11.0 [nvidia]=2.10.0 [bigpicture]=2.10.0 [nvsilent]=2.11.0 [theme]=2.1.0 [glyphs]=2.1.0 [single]=2.1.0
     [launcher]=2.1.0 [cec]=2.7.0 [machine]=2.9.0 [poweroff]=2.2.0 [vram]=2.3.0 [notify]=2.5.0 [steamgame]=2.5.1 [extended_controller_support]=2.10.0
     [kpin]=2.1.0 [hdmi]=2.1.0
 )

lib/steam-desktop.sh

@@ -24,7 +24,9 @@ STEAM_AUTOSTART="${XDG_CONFIG_HOME:-$HOME/.config}/autostart/steam.desktop"
 STEAM_SYSTEM_DESKTOP=/usr/share/applications/steam.desktop
 
 silent_status() {
-    grep -qs '^Exec=.*-silent' "$STEAM_AUTOSTART"
+    # The old systemd unit counts as on too (until it is migrated by an update of this option).
+    grep -qs '^Exec=.*-silent' "$STEAM_AUTOSTART" ||
+        [[ -f "$HOME/.config/systemd/user/steam-desktop-autostart.service" ]]
 }
 
 silent_old_unit_remove() {