fix(island): close a focused island with one outside click (#3792)

On Hyprland, an island holding keyboard focus runs a focus grab that
only whitelisted the bar window. The full-screen dismiss layer wasn't
on the list, so the first click outside only ended the grab and the
card needed a second click to close. That hit every card that takes
keyboard focus (weather right away, media after a click inside).

Add the dismiss layer to the grab, the way DPopout whitelists its
background window.

quickshell/Modules/DIsland/DIslandHostWindow.qml

@@ -28,6 +28,14 @@ Item {
         return root.body?.containsGlobalPoint(gx, gy, padding) ?? false;
     }
 
+    // The focus grab must include the dismiss layer, or Hyprland eats the first outside click to end the grab.
+    Binding {
+        target: root.body
+        property: "dismissWindow"
+        value: dismissWindow
+        when: !!root.body
+    }
+
     PanelWindow {
         id: dismissWindow
 

quickshell/Modules/DIsland/IslandBarHost.qml

@@ -177,6 +177,7 @@ Item {
     readonly property int keyboardFocusPolicy: KeyboardFocus.keyboardFocus(controller.keyboardDismissRequested && root.keyboardFocusArmed && !controller.keyboardYielded, null)
     readonly property bool wantsFocusGrab: KeyboardFocus.wantsGrab(controller.keyboardDismissRequested && !controller.keyboardYielded, null)
     readonly property var transientFocusWindows: islandTransientSurfaces.focusWindows
+    property var dismissWindow: null
     readonly property string registryKey: IslandHostRegistry.key(root.screen?.name, root.barId)
     property string registeredKey: ""
 

quickshell/Modules/DIsland/IslandHostChrome.qml

@@ -14,6 +14,6 @@ DFocusGrab {
     readonly property var maskItem: root.host && !root.host.inputSuspended ? root.host.inputMaskItem : null
     readonly property var fittsStripItem: root.host && !root.host.inputSuspended ? root.host.fittsStripItem : null
 
-    windows: [root.window].concat(root.extraWindows, root.host?.transientFocusWindows ?? [])
+    windows: [root.window].concat(root.extraWindows, root.host?.dismissWindow ?? [], root.host?.transientFocusWindows ?? [])
     wanted: root.host?.wantsFocusGrab ?? false
 }