BUG: Running in headless mode requires window

GrapesJS version

• I confirm to use the latest version of GrapesJS

What browser are you using?

Chrome 103.0.5060.134

Reproducible demo link

https://stackblitz.com/edit/node-zrdtg4?file=index.js

Describe the bug

How to reproduce the bug?

1. Initialize Editor in headless mode
2. Load the project data with just a basic text node

<details> <summary>Click to expand for sample data.</summary>

const _justTextData = {
      assets: [],
      styles: [],
      pages: [
        {
          frames: [
            {
              component: {
                type: 'wrapper',
                stylable: [
                  'background',
                  'background-color',
                  'background-image',
                  'background-repeat',
                  'background-attachment',
                  'background-position',
                  'background-size',
                ],
                attributes: { id: 'ipfo' },
                components: [
                  {
                    type: 'text',
                    attributes: { id: 'i1je' },
                    components: [{ type: 'textnode', content: 'Hello world!' }],
                  },
                ],
              },
            },
          ],
          id: '7bbomSfhvWF8QvfD',
        },
      ],
};

</details>

Sample Code

try {
  const editor = grapesjs.init({ headless: true });

  editor.loadProjectData(_justTextData);
  const html = editor.getHtml();
  const css = editor.getCss();

  console.log('html:', html);
  console.log('css:', css);
} catch (e) {
  console.log('error', e);
}

3. Generate the HTML and CSS using editor.getHtml() and editor.getCss() respectively.
4. HTML and CSS should be generated successfully.
5. Now Load the project with data containing text and image

<details> <summary>Click to expand for sample data.</summary>

const _textWithImageData = {
assets: [
  {
    type: 'image',
    src: 'https://images.unsplash.com/photo-1658397966058-d1d252892754?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=764&q=80',
    unitDim: 'px',
    height: 0,
    width: 0,
  },
],
styles: [
  {
    selectors: ['#ifvh'],
    style: { color: 'black' },
    mediaText: '(max-width: 900px)',
    atRuleType: 'media',
  },
],
pages: [
  {
    frames: [
      {
        component: {
          type: 'wrapper',
          stylable: [
            'background',
            'background-color',
            'background-image',
            'background-repeat',
            'background-attachment',
            'background-position',
            'background-size',
          ],
          attributes: { id: 'ih1q' },
          components: [
            {
              type: 'text',
              attributes: { id: 'i29t' },
              components: [{ type: 'textnode', content: 'Hello World' }],
            },
            {
              type: 'image',
              attributes: {
                id: 'ifvh',
                src: 'https://images.unsplash.com/photo-1658397966058-d1d252892754?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=764&q=80',
              },
            },
          ],
        },
      },
    ],
    id: '9T0c4L1n3IPynJMc',
  },
],
};

</details> 6. Generate HTML and CSS

---

What is the expected behavior? From what I understand, running on headless mode should not require window or document access, so HTML and CSS should in theory be generated in both cases.

What is the current behavior? HTML and CSS is generated in the first case but not in the second case and throws an error.

error ReferenceError: window is not defined
    at U (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:893064)
    at N.r.initialize (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:794563)
    at new e.Model (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:10599)
    at N.r.eval (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:455301)
    at new n (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:455545)
    at N.r.eval (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:408184)
    at N.r.n (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:408590)
    at new N.r (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:28357)
    at new value (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:440096)
    at n._prepareModel (/home/projects/node-zrdtg4/node_modules/grapesjs/dist/grapes.min.js:2:18706)

Same is the case when adding a video block, but only in this case the error is that document is not defined

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