Add launch action to dock favourite context menu

Right-click on a pinned favourite in the dock now shows:
- Launch: opens the app (using its own icon)
- Remove from Dock: existing unpin action, renamed for clarity

containments/homescreens/folio/qml/FavouritesBar.qml

@@ -341,9 +341,14 @@ MouseArea {
                         }
 
                         actions: [
+                            Kirigami.Action {
+                                icon.name: delegate.delegateModel.application.icon
+                                text: i18n("Launch")
+                                onTriggered: appDelegate.launchApp()
+                            },
                             Kirigami.Action {
                                 icon.name: "emblem-favorite"
-                                text: i18n("Remove")
+                                text: i18n("Remove from Dock")
                                 enabled: !folio.FolioSettings.lockLayout
                                 onTriggered: folio.FavouritesModel.removeEntry(delegate.index)
                             }