Support @page tags in single page PDF exports and ip allowlisting for new PDF export experience

The new PDF export experience does not currently support @page tags in the PDF stylesheet that can be used to modify single page PDF exports:

• https://support.atlassian.com/confluence-cloud/docs/advanced-pdf-export-customizations/
• https://support.atlassian.com/confluence-cloud/docs/customize-exports-to-pdf/

If there is a @ page tag present, it falls back to the old PDF export experience which does not export PDF pages as accurately.

Also if ip allowlisting is enabled, pdf export will fall back to the old PDF experience.

This ticket is to track the support of @page tags in the PDF stylesheet for single page PDF exports and support for ip allowlisting through the new PDF single page export experience.

Related:

• https://jira.atlassian.com/browse/CONFCLOUD-74893
• https://jira.atlassian.com/browse/CONFCLOUD-75811