DelegateContextMenu: Add support for separators in the mobile menu too

(cherry picked from commit a3f5962809)

src/qml/DelegateContextMenu.qml

@@ -357,6 +357,19 @@ Loader {
                         id: listViewAction
                         model: root.actions
 
+                        DelegateChooser {
+                            role: "separator"
+                            DelegateChoice {
+                                roleValue: true
+
+                                FormCard.FormDelegateSeparator {
+                                    visible: modelData.visible
+                                }
+                            }
+
+                            DelegateChoice {
+                                roleValue: false
+
                                 FormCard.FormButtonDelegate {
                                     icon.name: modelData.icon.name
                                     icon.color: modelData.icon.color ?? undefined
@@ -369,6 +382,8 @@ Loader {
                                     }
                                 }
                             }
+                        }
+                    }
 
                     Repeater {
                         model: root.nestedActions