Describe the bug
extra column when you type html comment in <mj-group>

To Reproduce
Steps to reproduce the behavior:

<mj-group>
  <!-- foreach($n){ -->
  <mj-column>
    ....
  </mj-column>
  <!-- } -->
  <mj-column>
    ....
  </mj-column>
</mj-group>

will build 4 columns, and for each width will be 16%

Expected behavior
only 2 column

MJML environment (please complete the following information):

• OS: MacOS
• MJML Version 4.2.0