20.0-RC3

Changes compared to: 20.0-RC2

Non user facing:

• Fixes an unreleased bug where the navigation menu had two of the same IDs. #19496
• Fixes an unreleased bug where the Settings notifications where would not appear next to the WordPress menu on mobile. #19497
• Fixes an unreleased bug where the mobile menu would not close when navigating to the same page or when going to a search result on the same page. #19497
• Fixes a bug where slides 2 and 3 text on the settings UI Intoduction modal would disappear when language direction is rtl. #19502
• Fixes an unreleased bug where opening the WordPress menu on mobile would push our content a bit too far to the right. #19497
• Fixes an unreleased bug where the Show more/less icon in the Settings menu would be bigger than designed. #19497
• Adds new features, improvements and bugfixes to the UI library package. #19385
• Fixes an unreleased bug where certain terms would not be searchable in certain locales due to the minimum length of the query. #19492
• Improves the navigation menu accessibility by adding aria-expanded and aria_current. #19496
• Fixes an unreleased bug where the (Settings) notifications could be wider than the screen. #19497