Mark latest post as read when clicking on right arrow shortcut

Signed-off-by: Artem Lavrukhin <lavryha4590@gmail.com>

CHANGELOG.md

@@ -9,6 +9,7 @@ The format is almost based on [Keep a Changelog](https://keepachangelog.com/en/1
 - Updated "New Folder" and "All articles" icons to differentiate them from "Subscribe" and "All articles".
 
 ### Fixed
+- Mark the latest post in a feed as read when clicking on the right arrow key.
 
 # Releases
 ## [16.2.0] - 2021-10-18

js/gui/KeyboardShortcuts.js

@@ -288,6 +288,8 @@
             var nextElement = activeElement.next();
             if (nextElement.length > 0) {
                 scrollToItem(scrollArea, nextElement, expandItemInCompact);
+            } else if (nextElement.length === 0) {
+                activeElement.find('.utils').trigger('click');
             } else {
                 // in case this is the last item it should still scroll below
                 // the