26.0-RC1

Changes compared to: 25.9

Enhancements:

• Opens the Advanced Settings' section when clicking the Customize llms.txt file button. #22542

Bugfixes:

• Fixes a bug where a string in the AI Generate usage counter tooltip was missing in RTL languages. #22534

Other:

• Adds safety check when accessing an array to avoid PHP warnings when getting the upgrade campaign for Wincher integration. Props to @bor0. #22508

Non user facing:

• Adds guard for enqueuing content analysis styling when content analysis feature is disabled. #22268
• Refactors the defaultProps to be defaultArguments instead. #22381
• Restores the Schema tab header that was accidentally removed. #22381
• Clean up Black Friday check list ad and upsell outdated and unused modals. #22540
• Fixes the advanced tracking of the Site Kit integration. #22546
• Replaces the unmaintained interpolate-components package with the createInterpolateElement from @wordpress/element. #22486
• Removes deprecated classes up until 23.5. #22543
• Add unit test for Get_Usage_Route::get_usage() with Too_Many_Requests_Exception. #22529
• Allow changing the main image ID through a filter wpseo_schema_main_image_id props: @JoryHogeveen #22499
• Updates the @yoast/ai-frontend package to the latest version in package.json to incorporate the latest improvements and fixes in the @yoast/ai-frontend library. #22534
• Allows Site Kit to control the Site Kit feature flag remotely. #22548
• Correct invalid @covers tags in unit tests for llms.txt. #22544
• Removes files from the old plans page. #22527
• Adds a unit test for the llms.txt health check. #22541
• Updates the Black Friday ads. #22532