effects/overview,windowview: restore ability to close windows

src/effects/overview/qml/ScreenView.qml

@@ -196,6 +196,7 @@ FocusScope {
                 animationDuration: effect.animationDuration
                 animationEnabled: container.animationEnabled
                 organized: container.organized
+                supportsCloseWindows: true
                 model: KWinComponents.ClientFilterModel {
                     activity: KWinComponents.Workspace.currentActivity
                     desktop: KWinComponents.Workspace.currentVirtualDesktop

src/effects/windowview/qml/main.qml

@@ -109,6 +109,7 @@ Item {
             organized: container.organized
             showOnly: container.effect.mode === WindowView.ModeWindowClass ? "activeClass" : selectedIds
             layout: effect.layout
+            supportsCloseWindows: true
             model: KWinComponents.ClientFilterModel {
                 activity: KWinComponents.Workspace.currentActivity
                 desktop: container.effect.mode == WindowView.ModeCurrentDesktop ? KWinComponents.Workspace.currentVirtualDesktop : undefined