Fixed #16407 - weird layout on components for non super user

[snipe]

This fixes #16407, where a non-super user was not seeing the checkout button and the notes field was breaking the page layout

[what-the-diff]

PR Summary

• Correction in HTML Structure
  An unnecessary closing </div> tag was removed from the component view. This effort aims at ensuring the proper structuring of the webpage, resulting in a better user experience.

• Improvement in Authorization Check
  The authorization verification has been updated to refer to specific instances of components rather than the generic component class. This precise check enhances system security as it ensures only the authorized users have access to the respective component instance.