custom app collapse modal

Hi.
I have a question how to expand/collapse the modal window (see attachment).
When I click the modal window, then window is being opened. but then I close it and this modal is still opened and I need to collapse it manually before to open the modal again. How can I close it automatically when modal is being closed. code example is below:

manifest.json

"product": {
    "freshdesk": {
      "location": {
        "contact_sidebar": {
          "url": "template.html",
          "icon": "icon.svg"
        }
      }
    }
  },

app.js

document.addEventListener("DOMContentLoaded", () => {
    app.initialized()
        .then((_client) => {
            window.client = _client;

            client.events.on('app.activated', () => {
                client.interface.trigger('showModal', {
                    title: 'title',
                    template: 'template2.html',
                })
                .then(() => {})
                .catch(function (error) {
                    console.error('unable to open find alias modal: ', error);
                });
            });
        })
        .catch(function (error) {
            console.error('Failed to initialize the app with error: ', error);
        });
});