Confluence Cloud KBI articles are blocked by `X-Frame-Options` in Safari

Issue Summary

Confluence Cloud integration doesn't allow customers to view knowledge base articles on customer portal/issue view/etc. Because of strict politics & restrictions in Safari, related to `X-Frame-Options` and recently released cookie politics, it blocks iframe usage for displaying KBI articles.

Steps to Reproduce

1. Set up Confluence Cloud integration
2. Add KB space for a project in the project settings
3. Open request creation form on the customer portal
4. or open dialog with KB article from the issue view

Expected Results

Should display KB article

Actual Results

KB article iframe blocked by safari with console error.

`Refused to display 'iframe-host-placeholder' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'.`

Workaround

Currently, there is no known workaround for this behavior, although you can use any other browser, except Safari. A workaround will be added here when available