v2.4.9-rc

Change Log

• Compat : REST API Cache - REST caching failed for attachments
• Fixed : Non-public post types displayed ineffective preview link. Now suppress link or link to Compare Revisions screen instead.
• Fixed : Error loading Revisions > Settings page if nullstring license key is stored, on some installations
• Feature : Display notice to Revisor if they have already submitted a revision (in Gutenberg only if constant REVISIONARY_GUTEN_NOTICE defined)