Hide language dropdown behind a feature flag

src/components/ui/column/column.tsx

@@ -59,15 +59,13 @@ export interface IColumn {
   children?: React.ReactNode;
   /** Action for the ColumnHeader, displayed at the end. */
   action?: React.ReactNode;
-  /** Determines if the action for the ColumnHeader is displayed on the right. */
-  actionRightPosition?: boolean;
   /** Column size, inherited from Card. */
   size?: CardSizes;
 }
 
 /** A backdrop for the main section of the UI. */
 const Column = React.forwardRef<HTMLDivElement, IColumn>((props, ref): JSX.Element => {
-  const { backHref, children, label, transparent = false, withHeader = true, className, bodyClassName, action, actionRightPosition, size } = props;
+  const { backHref, children, label, transparent = false, withHeader = true, className, bodyClassName, action, size } = props;
   const soapboxConfig = useSoapboxConfig();
   const [isScrolled, setIsScrolled] = useState(false);
 
@@ -108,7 +106,6 @@ const Column = React.forwardRef<HTMLDivElement, IColumn>((props, ref): JSX.Eleme
               'p-4 sm:p-0 sm:pb-4 black:p-4': transparent,
               '-mt-4 p-4': size !== 'lg' && !transparent,
               '-mt-4 p-4 sm:-mt-6 sm:-mx-6 sm:p-6': size === 'lg' && !transparent,
-              'w-full': actionRightPosition,
             })}
             action={action}
           />

src/features/public-timeline/index.tsx

@@ -64,7 +64,13 @@ const PublicTimeline = () => {
   }, []);
 
   return (
-    <Column className='-mt-3 sm:mt-0' label={intl.formatMessage(messages.title)} transparent={!isMobile} action={<LanguageDropdown />} actionRightPosition>
+    <Column
+      className='-mt-3 sm:mt-0'
+      label={intl.formatMessage(messages.title)}
+      transparent={!isMobile}
+      action={features.publicTimelineLanguage ? <LanguageDropdown /> : null}
+      // actionRightPosition
+    >
       <PinnedHostsPicker />
 
       {showExplanationBox && (

src/utils/features.ts

@@ -900,6 +900,9 @@ const getInstanceFeatures = (instance: Instance) => {
       v.software === DITTO,
     ]),
 
+    /** Ability to filter the public timeline by language. */
+    publicTimelineLanguage: v.software === DITTO,
+
     /**
      * Ability to quote posts in statuses.
      * @see POST /api/v1/statuses