Fix formatting for field assigned declaration

[SytheZN]

This change fixes an issue with assignments declaring complex types.

The included sample would previously format as below and the rest of the file indentation would be off.

  globalDrawer: Kirigami.GlobalDrawer {
  title: i18n("Window")
  titleIcon: "applications-graphics"
  isMenu: !root.isMobile
  actions: [
    Kirigami.Action {
      text: i18n("Plus One")
      icon.name: "list-add"
      onTriggered: {
        counter += 1
      }
    },
    Kirigami.Action {
      text: i18n("About Window")
      icon.name: "help-about"
      onTriggered: pageStack.layers.push('qrc: About.qml')
    },
    Kirigami.Action {
      text: i18n("Quit")
      icon.name: "application-exit"
      onTriggered: Qt.quit()
    }
  ]
}